Recent official observations from Environment Canada stations, including Toronto Pearson International Airport, recorded a daily maximum of 16°C on May 22, locking in the market’s near-100% implied probability for that outcome. Ensemble forecasts from Environment Canada and global numerical weather prediction models converged tightly on a 14–17°C range, reflecting modest upper-level ridging and limited boundary-layer moisture that suppressed afternoon heating near late-May climatological norms. This strong model consensus, validated by surface data, left minimal uncertainty for resolution. Only an unforecasted localized thermal surge or station microclimate anomaly could have pushed readings outside the 16°C threshold.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Toronto on May 22?
Highest temperature in Toronto on May 22?
16°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$51,610 Vol.
$51,610 Vol.
May 22, 2026
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
Yes
17°C
No
18°C
No
19°C
No
20°C or higher
No
16°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$51,610 Vol.
$51,610 Vol.
May 22, 2026
10°C or below
$2,754 Vol.
No
11°C
$1,406 Vol.
No
12°C
$3,018 Vol.
No
13°C
$4,586 Vol.
No
14°C
$5,809 Vol.
No
15°C
$7,071 Vol.
No
16°C
$6,702 Vol.
Yes
17°C
$7,528 Vol.
No
18°C
$6,798 Vol.
No
19°C
$3,961 Vol.
No
20°C or higher
$1,976 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 22 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Recent official observations from Environment Canada stations, including Toronto Pearson International Airport, recorded a daily maximum of 16°C on May 22, locking in the market’s near-100% implied probability for that outcome. Ensemble forecasts from Environment Canada and global numerical weather prediction models converged tightly on a 14–17°C range, reflecting modest upper-level ridging and limited boundary-layer moisture that suppressed afternoon heating near late-May climatological norms. This strong model consensus, validated by surface data, left minimal uncertainty for resolution. Only an unforecasted localized thermal surge or station microclimate anomaly could have pushed readings outside the 16°C threshold.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 22 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 20, 2026, 12:05 AM ET
Volume
$51,610End Date
May 22, 2026Market Opened
May 20, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 22 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Recent official observations from Environment Canada stations, including Toronto Pearson International Airport, recorded a daily maximum of 16°C on May 22, locking in the market’s near-100% implied probability for that outcome. Ensemble forecasts from Environment Canada and global numerical weather prediction models converged tightly on a 14–17°C range, reflecting modest upper-level ridging and limited boundary-layer moisture that suppressed afternoon heating near late-May climatological norms. This strong model consensus, validated by surface data, left minimal uncertainty for resolution. Only an unforecasted localized thermal surge or station microclimate anomaly could have pushed readings outside the 16°C threshold.
This market will resolve to the temperature range that contains the highest temperature recorded at the Toronto Pearson Intl Airport Station in degrees Celsius on 22 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ca/mississauga/CYYZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$51,610End Date
May 22, 2026Market Opened
May 20, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent official observations from Environment Canada stations, including Toronto Pearson International Airport, recorded a daily maximum of 16°C on May 22, locking in the market’s near-100% implied probability for that outcome. Ensemble forecasts from Environment Canada and global numerical weather prediction models converged tightly on a 14–17°C range, reflecting modest upper-level ridging and limited boundary-layer moisture that suppressed afternoon heating near late-May climatological norms. This strong model consensus, validated by surface data, left minimal uncertainty for resolution. Only an unforecasted localized thermal surge or station microclimate anomaly could have pushed readings outside the 16°C threshold.
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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