{"source":"polymarket","id":"908192","ticker":"highest-temperature-in-helsinki-on-august-27-2026","slug":"highest-temperature-in-helsinki-on-august-27-2026","title":"Highest temperature in Helsinki on August 27?","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":1505.71417,"volume_24hr":1515.71417,"volume_24h_change":null,"normalized_vol_24hr":22.30771827697754,"normalized_volume":12.189167022705078,"liquidity":48249.16321,"open_interest":1494.587162,"categories":["Climate and Weather"],"tags":[{"id":"84","slug":"weather","label":"Weather"},{"id":"101757","slug":"recurring","label":"Recurring"},{"id":"102169","slug":"hide-from-new","label":"Hide From New"},{"id":"103040","slug":"daily-temperature","label":"Daily Temperature"},{"id":"104440","slug":"helsinki","label":"Helsinki"},{"id":"104596","slug":"highest-temperature","label":"Highest temperature"}],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"21°C","top_outcome_probability":0.42,"top_outcome_prob_24h_change":0.14999999999999997,"top_outcome_volume_24h_change":66.039072,"updated_at":"2026-08-25T18:17:45.431493Z","fetched_at":"2026-08-25T18:17:45.431493Z","added_at":"2026-08-25T05:19:06.259020Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026","chart_24h":[31.0,130.976277,253.244678,269.35967800000003,694.406678,717.827678,725.935678,1176.337796,1194.337796,1462.71417,1502.71417,1507.71417,1515.71417],"markets":[{"source":"polymarket","id":"3867809","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-21c","question":"Will the highest temperature in Helsinki be 21°C on August 27?","group_item_title":"21°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.42,0.58],"probability":0.42,"spread":0.04,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":66.039072,"volume_24hr":66.039072,"prob_24h_change":0.14999999999999997,"volume_24h_change":66.039072,"normalized_vol_24hr":7.638578414916992,"normalized_volume":5.188443660736084,"liquidity":12841.7989,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T15:21:49.676996Z","fetched_at":"2026-08-25T15:21:25.028122Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-21c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.27,0.295,0.385,0.425,0.43,0.415,0.42]},{"source":"polymarket","id":"3867810","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-22c","question":"Will the highest temperature in Helsinki be 22°C on August 27?","group_item_title":"22°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.315,0.685],"probability":0.315,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":233.069342,"volume_24hr":233.06934199999995,"prob_24h_change":0.2,"volume_24h_change":212.06934199999995,"normalized_vol_24hr":12.856164932250977,"normalized_volume":8.732447624206543,"liquidity":7950.3941,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T17:54:41.777091Z","fetched_at":"2026-08-25T17:53:21.627688Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-22c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.115,0.255,0.295,0.32,0.305,0.31,0.31,0.315,0.325,0.315,0.315]},{"source":"polymarket","id":"3867808","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-20c","question":"Will the highest temperature in Helsinki be 20°C on August 27?","group_item_title":"20°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.175,0.825],"probability":0.175,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":141.65740399999999,"volume_24hr":141.65740399999999,"prob_24h_change":-0.04000000000000001,"volume_24h_change":141.65740399999999,"normalized_vol_24hr":10.628331184387207,"normalized_volume":7.219209671020508,"liquidity":2660.0054,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T18:18:44.816864Z","fetched_at":"2026-08-25T18:17:45.576831Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-20c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.215,0.225,0.22,0.2,0.205,0.19,0.185,0.185,0.18,0.175,0.175,0.165]},{"source":"polymarket","id":"3867811","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-23c","question":"Will the highest temperature in Helsinki be 23°C on August 27?","group_item_title":"23°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.075,0.925],"probability":0.075,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":61.86111,"volume_24hr":61.86111,"prob_24h_change":0.034999999999999996,"volume_24h_change":61.86111,"normalized_vol_24hr":7.406600475311279,"normalized_volume":5.030874729156494,"liquidity":2294.9033,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T15:23:45.646221Z","fetched_at":"2026-08-25T15:21:25.028122Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-23c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.04,0.06,0.065,0.075,0.085,0.08,0.075]},{"source":"polymarket","id":"3867807","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-19c","question":"Will the highest temperature in Helsinki be 19°C on August 27?","group_item_title":"19°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.035,0.965],"probability":0.035,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":125.40544200000001,"volume_24hr":125.40544200000001,"prob_24h_change":-0.035,"volume_24h_change":125.40544200000001,"normalized_vol_24hr":10.116345405578613,"normalized_volume":6.8714470863342285,"liquidity":2480.415,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T17:54:41.777091Z","fetched_at":"2026-08-25T17:53:21.627688Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-19c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.07,0.075,0.05,0.055,0.035,0.035]},{"source":"polymarket","id":"3867812","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-24c","question":"Will the highest temperature in Helsinki be 24°C on August 27?","group_item_title":"24°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.012,0.988],"probability":0.012,"spread":0.014,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":18.608,"volume_24hr":18.608,"prob_24h_change":0.009000000000000001,"volume_24h_change":18.608,"normalized_vol_24hr":3.8253509998321533,"normalized_volume":2.598339319229126,"liquidity":2633.41786,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T17:53:53.119007Z","fetched_at":"2026-08-25T17:53:21.627688Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-24c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.003,0.003,0.003,0.01,0.0105,0.0125,0.012,0.013,0.012]},{"source":"polymarket","id":"3867813","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-25c","question":"Will the highest temperature in Helsinki be 25°C on August 27?","group_item_title":"25°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.012,0.988],"probability":0.012,"spread":0.014,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":128.1008,"volume_24hr":128.1008,"prob_24h_change":0.009000000000000001,"volume_24h_change":128.1008,"normalized_vol_24hr":10.20474624633789,"normalized_volume":6.931493282318115,"liquidity":3854.39015,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T18:17:45.576831Z","fetched_at":"2026-08-25T18:17:45.576831Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-25c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.003,0.003,0.003,0.0035,0.0035,0.0055,0.012,0.012,0.012,0.012]},{"source":"polymarket","id":"3867804","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-16corbelow","question":"Will the highest temperature in Helsinki be 16°C or below on August 27?","group_item_title":"16°C or below","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.02,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":190.0,"volume_24hr":200.0,"prob_24h_change":-0.025,"volume_24h_change":190.0,"normalized_vol_24hr":12.148336410522461,"normalized_volume":8.093620300292969,"liquidity":2166.1948,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T14:56:28.889839Z","fetched_at":"2026-08-25T14:52:18.582321Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-16corbelow","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.035,0.02,0.02,0.01,0.01]},{"source":"polymarket","id":"3867805","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-17c","question":"Will the highest temperature in Helsinki be 17°C on August 27?","group_item_title":"17°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.02,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":5.0,"volume_24hr":5.0,"prob_24h_change":0.0,"volume_24h_change":5.0,"normalized_vol_24hr":1.3867017030715942,"normalized_volume":0.9419060945510864,"liquidity":1932.7737,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T13:31:49.382603Z","fetched_at":"2026-08-25T13:26:30.475426Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-17c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.01,0.01,0.01]},{"source":"polymarket","id":"3867806","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-18c","question":"Will the highest temperature in Helsinki be 18°C on August 27?","group_item_title":"18°C","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.02,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":141.0,"volume_24hr":141.0,"prob_24h_change":-0.025,"volume_24h_change":141.0,"normalized_vol_24hr":10.60854721069336,"normalized_volume":7.205771446228027,"liquidity":2592.5892,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T14:56:28.889839Z","fetched_at":"2026-08-25T14:52:18.582321Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-18c","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.035,0.025,0.02,0.025,0.01]},{"source":"polymarket","id":"3867814","event_id":"908192","slug":"highest-temperature-in-helsinki-on-august-27-2026-26corhigher","question":"Will the highest temperature in Helsinki be 26°C or higher on August 27?","group_item_title":"26°C or higher","description":"This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 27 Aug '26.\n\nThe resolution source for this market will be information from NOAA, specifically the highest reading under the \"Temp\" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk\n\nIf NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.\n\nTo toggle between Fahrenheit and Celsius, click the \"Switch to Metric Units\" button until the relevant table displays °C.\n\nThis market can not resolve until the first data point for the following date has been published on the resolution source.\n\nThe resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.\n\nRevisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/hel-537d0cb3c2.jpg","outcomes":["Yes","No"],"outcome_prices":[0.002,0.998],"probability":0.002,"spread":0.004,"active":true,"closed":false,"start_date":"2026-08-25T04:58:49Z","end_date":"2026-08-27T12:00:00Z","closed_time":null,"volume":394.973,"volume_24hr":394.973,"prob_24h_change":-0.001,"volume_24h_change":394.973,"normalized_vol_24hr":15.453309059143066,"normalized_volume":10.496537208557129,"liquidity":3592.70551,"categories":["Climate and Weather"],"countries":["Finland"],"updated_at":"2026-08-25T11:15:45.706201Z","fetched_at":"2026-08-25T11:15:23.116401Z","added_at":"2026-08-25T05:19:06.516932Z","url":"https://polymarket.com/event/highest-temperature-in-helsinki-on-august-27-2026/highest-temperature-in-helsinki-on-august-27-2026-26corhigher","event_title":"Highest temperature in Helsinki on August 27?","chart_24h":[0.003,0.003,0.003,0.003,0.0005]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/908192","as_of":"2026-08-25T18:31:38.394440Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"Highest temperature in Helsinki on August 27?\" — top market at 0% probability across 11 outcomes","source_url":null}}