Official temperature observations from Environment and Climate Change Canada confirm that Toronto reached a daily maximum of 14°C on May 23 under northerly flow and mostly cloudy conditions, aligning precisely with the market's near-certain outcome. Surface station data, including standard measurements at Pearson International Airport, showed afternoon peaks no higher than this threshold, consistent with model guidance issued in the preceding 48 hours that incorporated cool advection and limited insolation. This strong consensus reflects traders' confidence in verified meteorological records over forecasts. A realistic challenge would require an official data revision or alternative station reporting a higher value, though historical patterns indicate such adjustments are rare once preliminary observations are finalized.
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 23?
Highest temperature in Toronto on May 23?
14°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$76,210 Vol.
$76,210 Vol.
May 23, 2026
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
Yes
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C or higher
No
14°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$76,210 Vol.
$76,210 Vol.
May 23, 2026
10°C or below
$9,240 Vol.
No
11°C
$8,129 Vol.
No
12°C
$3,978 Vol.
No
13°C
$22,941 Vol.
No
14°C
$11,301 Vol.
Yes
15°C
$6,093 Vol.
No
16°C
$3,806 Vol.
No
17°C
$4,741 Vol.
No
18°C
$3,005 Vol.
No
19°C
$1,581 Vol.
No
20°C or higher
$1,395 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 23 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 temperature observations from Environment and Climate Change Canada confirm that Toronto reached a daily maximum of 14°C on May 23 under northerly flow and mostly cloudy conditions, aligning precisely with the market's near-certain outcome. Surface station data, including standard measurements at Pearson International Airport, showed afternoon peaks no higher than this threshold, consistent with model guidance issued in the preceding 48 hours that incorporated cool advection and limited insolation. This strong consensus reflects traders' confidence in verified meteorological records over forecasts. A realistic challenge would require an official data revision or alternative station reporting a higher value, though historical patterns indicate such adjustments are rare once preliminary observations are finalized.
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 23 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 21, 2026, 6:05 AM ET
Volume
$76,210End Date
May 23, 2026Market Opened
May 21, 2026, 6:05 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 23 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 temperature observations from Environment and Climate Change Canada confirm that Toronto reached a daily maximum of 14°C on May 23 under northerly flow and mostly cloudy conditions, aligning precisely with the market's near-certain outcome. Surface station data, including standard measurements at Pearson International Airport, showed afternoon peaks no higher than this threshold, consistent with model guidance issued in the preceding 48 hours that incorporated cool advection and limited insolation. This strong consensus reflects traders' confidence in verified meteorological records over forecasts. A realistic challenge would require an official data revision or alternative station reporting a higher value, though historical patterns indicate such adjustments are rare once preliminary observations are finalized.
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 23 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
$76,210End Date
May 23, 2026Market Opened
May 21, 2026, 6:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official temperature observations from Environment and Climate Change Canada confirm that Toronto reached a daily maximum of 14°C on May 23 under northerly flow and mostly cloudy conditions, aligning precisely with the market's near-certain outcome. Surface station data, including standard measurements at Pearson International Airport, showed afternoon peaks no higher than this threshold, consistent with model guidance issued in the preceding 48 hours that incorporated cool advection and limited insolation. This strong consensus reflects traders' confidence in verified meteorological records over forecasts. A realistic challenge would require an official data revision or alternative station reporting a higher value, though historical patterns indicate such adjustments are rare once preliminary observations are finalized.
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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