Environment Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 5 reached at least 18°C by 12:00 EDT, with hourly readings climbing from 12°C at midnight to 17°C at 11:00 and 18°C at noon, locking in the 17°C or higher outcome amid trader consensus at 100%. This exceeds the forecast high of 15°C under cloudy skies with 40% shower chances and a southwest-to-northwest wind shift, reflecting persistent warmth from a high-pressure ridge that broke records on May 4. Realistic challenges are minimal—only a measurement revision or strict midnight cutoff misalignment could alter it, though official data shows clear diurnal progression; afternoon showers may cap further gains but won't retroactively lower the peak. Updated model runs expected later today.
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 5?
Highest temperature in Toronto on May 5?
17°C or higher 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$30,623 Vol.
$30,623 Vol.
May 5, 2026
7°C or below
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C or higher
Yes
17°C or higher 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$30,623 Vol.
$30,623 Vol.
May 5, 2026
7°C or below
$881 Vol.
No
8°C
$511 Vol.
No
9°C
$932 Vol.
No
10°C
$1,008 Vol.
No
11°C
$1,507 Vol.
No
12°C
$1,811 Vol.
No
13°C
$3,019 Vol.
No
14°C
$5,495 Vol.
No
15°C
$4,297 Vol.
No
16°C
$4,093 Vol.
No
17°C or higher
$7,069 Vol.
Yes
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 5 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.Environment Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 5 reached at least 18°C by 12:00 EDT, with hourly readings climbing from 12°C at midnight to 17°C at 11:00 and 18°C at noon, locking in the 17°C or higher outcome amid trader consensus at 100%. This exceeds the forecast high of 15°C under cloudy skies with 40% shower chances and a southwest-to-northwest wind shift, reflecting persistent warmth from a high-pressure ridge that broke records on May 4. Realistic challenges are minimal—only a measurement revision or strict midnight cutoff misalignment could alter it, though official data shows clear diurnal progression; afternoon showers may cap further gains but won't retroactively lower the peak. Updated model runs expected later today.
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 5 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 3, 2026, 12:07 AM ET
Volume
$30,623End Date
May 5, 2026Market Opened
May 3, 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 5 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.Environment Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 5 reached at least 18°C by 12:00 EDT, with hourly readings climbing from 12°C at midnight to 17°C at 11:00 and 18°C at noon, locking in the 17°C or higher outcome amid trader consensus at 100%. This exceeds the forecast high of 15°C under cloudy skies with 40% shower chances and a southwest-to-northwest wind shift, reflecting persistent warmth from a high-pressure ridge that broke records on May 4. Realistic challenges are minimal—only a measurement revision or strict midnight cutoff misalignment could alter it, though official data shows clear diurnal progression; afternoon showers may cap further gains but won't retroactively lower the peak. Updated model runs expected later today.
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 5 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
$30,623End Date
May 5, 2026Market Opened
May 3, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Environment Canada observations at Toronto Pearson International Airport confirm the highest temperature on May 5 reached at least 18°C by 12:00 EDT, with hourly readings climbing from 12°C at midnight to 17°C at 11:00 and 18°C at noon, locking in the 17°C or higher outcome amid trader consensus at 100%. This exceeds the forecast high of 15°C under cloudy skies with 40% shower chances and a southwest-to-northwest wind shift, reflecting persistent warmth from a high-pressure ridge that broke records on May 4. Realistic challenges are minimal—only a measurement revision or strict midnight cutoff misalignment could alter it, though official data shows clear diurnal progression; afternoon showers may cap further gains but won't retroactively lower the peak. Updated model runs expected later today.
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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