Official hourly observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 16, 2026, peaked at 21°C around 13:00 EDT, amid cloudy conditions with showers, light rain, and falling temperatures to 16°C by afternoon. This matches pre-event forecast consensus from Environment Canada models predicting a warm high near 21°C under a passing low-pressure system, well above the mid-April climatological average of 12–13°C. Trader consensus at 100% implied probability for 21°C reflects verified ground-truth data from the official station, incentivizing alignment with authoritative measurements. Realistic challenges include rare post-processing revisions from instrument calibration or quality control, though such adjustments seldom exceed 0.5°C and are unlikely here.
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 April 16?
21°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$139,103 Vol.
$139,103 Vol.
15°C or below
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
No
25°C or higher
No
21°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$139,103 Vol.
$139,103 Vol.
15°C or below
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
No
25°C or higher
No
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: Apr 14, 2026, 6:05 PM ET
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official hourly observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 16, 2026, peaked at 21°C around 13:00 EDT, amid cloudy conditions with showers, light rain, and falling temperatures to 16°C by afternoon. This matches pre-event forecast consensus from Environment Canada models predicting a warm high near 21°C under a passing low-pressure system, well above the mid-April climatological average of 12–13°C. Trader consensus at 100% implied probability for 21°C reflects verified ground-truth data from the official station, incentivizing alignment with authoritative measurements. Realistic challenges include rare post-processing revisions from instrument calibration or quality control, though such adjustments seldom exceed 0.5°C and are unlikely here.
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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