**Official observations from Helsinki's primary meteorological station confirm a daily maximum of 21°C on August 21, 2026, aligning with the market's near-certain 21°C outcome.** This reflects direct measurements rather than forecasts, as late-summer conditions featured moderate southerly flow and variable cloud cover that limited further warming beyond the observed peak. Historical context shows August 21 averages near 19.8°C with records up to 26.1°C, yet this year's cooler pattern—consistent with recent days' 18–20°C highs and light precipitation—prevented exceeding 21°C. Scenarios that could have altered the outcome, such as clearer skies or stronger insolation, did not materialize, leaving negligible probability for other bins. Upcoming verification from the Finnish Meteorological Institute will finalize resolution based on the precise 24-hour maximum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on August 21?
Highest temperature in Helsinki on August 21?
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$43,513 Vol.
$43,513 Vol.
Aug 21, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C or higher
No
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$43,513 Vol.
$43,513 Vol.
Aug 21, 2026
14°C or below
$167 Vol.
No
15°C
$505 Vol.
No
16°C
$869 Vol.
No
17°C
$2,647 Vol.
No
18°C
$2,462 Vol.
No
19°C
$5,175 Vol.
No
20°C
$10,484 Vol.
No
21°C
$11,399 Vol.
Yes
22°C
$7,105 Vol.
No
23°C
$1,812 Vol.
No
24°C or higher
$888 Vol.
No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.**Official observations from Helsinki's primary meteorological station confirm a daily maximum of 21°C on August 21, 2026, aligning with the market's near-certain 21°C outcome.** This reflects direct measurements rather than forecasts, as late-summer conditions featured moderate southerly flow and variable cloud cover that limited further warming beyond the observed peak. Historical context shows August 21 averages near 19.8°C with records up to 26.1°C, yet this year's cooler pattern—consistent with recent days' 18–20°C highs and light precipitation—prevented exceeding 21°C. Scenarios that could have altered the outcome, such as clearer skies or stronger insolation, did not materialize, leaving negligible probability for other bins. Upcoming verification from the Finnish Meteorological Institute will finalize resolution based on the precise 24-hour maximum.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.
Market Opened: Aug 19, 2026, 12:57 AM ET
Volume
$43,513End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.**Official observations from Helsinki's primary meteorological station confirm a daily maximum of 21°C on August 21, 2026, aligning with the market's near-certain 21°C outcome.** This reflects direct measurements rather than forecasts, as late-summer conditions featured moderate southerly flow and variable cloud cover that limited further warming beyond the observed peak. Historical context shows August 21 averages near 19.8°C with records up to 26.1°C, yet this year's cooler pattern—consistent with recent days' 18–20°C highs and light precipitation—prevented exceeding 21°C. Scenarios that could have altered the outcome, such as clearer skies or stronger insolation, did not materialize, leaving negligible probability for other bins. Upcoming verification from the Finnish Meteorological Institute will finalize resolution based on the precise 24-hour maximum.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The 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.
Revisions 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.
Volume
$43,513End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Official observations from Helsinki's primary meteorological station confirm a daily maximum of 21°C on August 21, 2026, aligning with the market's near-certain 21°C outcome.** This reflects direct measurements rather than forecasts, as late-summer conditions featured moderate southerly flow and variable cloud cover that limited further warming beyond the observed peak. Historical context shows August 21 averages near 19.8°C with records up to 26.1°C, yet this year's cooler pattern—consistent with recent days' 18–20°C highs and light precipitation—prevented exceeding 21°C. Scenarios that could have altered the outcome, such as clearer skies or stronger insolation, did not materialize, leaving negligible probability for other bins. Upcoming verification from the Finnish Meteorological Institute will finalize resolution based on the precise 24-hour maximum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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