Official meteorological observations for Toronto on May 21 recorded a daily high near 15 °C, well below the seasonal average of about 20 °C. This outcome reflects a cooler-than-normal air mass advected by northerly flow, limiting daytime warming under mostly sunny skies with light winds. Environment Canada and local stations documented maximum temperatures in this narrow range, aligning with the market’s near-certain pricing for the 15 °C outcome and negligible odds for 18 °C or higher. While minor variations can occur across micro-sites or measurement timing, the consensus data from authoritative networks leave little room for revision unless official post-event adjustments alter the reported 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 Toronto on May 21?
Highest temperature in Toronto on May 21?
15°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$163,665 Vol.
$163,665 Vol.
May 21, 2026
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C or higher
No
15°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$163,665 Vol.
$163,665 Vol.
May 21, 2026
8°C or below
$1,171 Vol.
No
9°C
$17,327 Vol.
No
10°C
$641 Vol.
No
11°C
$2,108 Vol.
No
12°C
$3,619 Vol.
No
13°C
$4,849 Vol.
No
14°C
$105,944 Vol.
No
15°C
$8,241 Vol.
Yes
16°C
$8,655 Vol.
No
17°C
$4,263 Vol.
No
18°C or higher
$6,848 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 21 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.Official meteorological observations for Toronto on May 21 recorded a daily high near 15 °C, well below the seasonal average of about 20 °C. This outcome reflects a cooler-than-normal air mass advected by northerly flow, limiting daytime warming under mostly sunny skies with light winds. Environment Canada and local stations documented maximum temperatures in this narrow range, aligning with the market’s near-certain pricing for the 15 °C outcome and negligible odds for 18 °C or higher. While minor variations can occur across micro-sites or measurement timing, the consensus data from authoritative networks leave little room for revision unless official post-event adjustments alter the reported maximum.
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 21 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 19, 2026, 12:07 AM ET
Volume
$163,665End Date
May 21, 2026Market Opened
May 19, 2026, 12:07 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 21 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.Official meteorological observations for Toronto on May 21 recorded a daily high near 15 °C, well below the seasonal average of about 20 °C. This outcome reflects a cooler-than-normal air mass advected by northerly flow, limiting daytime warming under mostly sunny skies with light winds. Environment Canada and local stations documented maximum temperatures in this narrow range, aligning with the market’s near-certain pricing for the 15 °C outcome and negligible odds for 18 °C or higher. While minor variations can occur across micro-sites or measurement timing, the consensus data from authoritative networks leave little room for revision unless official post-event adjustments alter the reported maximum.
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 21 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
$163,665End Date
May 21, 2026Market Opened
May 19, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations for Toronto on May 21 recorded a daily high near 15 °C, well below the seasonal average of about 20 °C. This outcome reflects a cooler-than-normal air mass advected by northerly flow, limiting daytime warming under mostly sunny skies with light winds. Environment Canada and local stations documented maximum temperatures in this narrow range, aligning with the market’s near-certain pricing for the 15 °C outcome and negligible odds for 18 °C or higher. While minor variations can occur across micro-sites or measurement timing, the consensus data from authoritative networks leave little room for revision unless official post-event adjustments alter the reported 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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