Trader consensus on Polymarket closely splits between 16°C (29.5%) and 17°C (28.5%) for Toronto Pearson International Airport's highest temperature on April 17, reflecting Environment Canada's latest forecasts averaging 17-19°C amid partly cloudy skies and 30% shower chances, well above the mid-April climatological norm of 12-13°C. This tight clustering stems from GFS and ECMWF ensemble agreement on mild southerly flow fostering above-seasonal warmth following recent rainy patterns on April 16, but with model spreads introducing uncertainty—full sun could push toward 18°C, while increased cloud cover or afternoon showers might cap at 15°C or below (19.7%). Key differentiators include timing of any precipitation and boundary layer mixing; watch for updated 12z model runs today for potential shifts before resolution.
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 17?
Highest temperature in Toronto on April 17?
16°C 30%
17°C 28%
15°C or below 18.0%
18°C 14%
NEW
$23,253 Vol.
NEW
$23,253 Vol.
Apr 17, 2026
15°C or below
18%
16°C
30%
17°C
28%
18°C
14%
19°C
9%
20°C
2%
21°C
1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
16°C 30%
17°C 28%
15°C or below 18.0%
18°C 14%
NEW
$23,253 Vol.
NEW
$23,253 Vol.
Apr 17, 2026
15°C or below
$6,027 Vol.
18%
16°C
$1,645 Vol.
30%
17°C
$1,553 Vol.
28%
18°C
$1,483 Vol.
14%
19°C
$1,466 Vol.
9%
20°C
$3,301 Vol.
2%
21°C
$1,709 Vol.
1%
22°C
$1,634 Vol.
<1%
23°C
$1,356 Vol.
<1%
24°C
$1,690 Vol.
<1%
25°C or higher
$1,578 Vol.
<1%
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 17 Apr '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.Trader consensus on Polymarket closely splits between 16°C (29.5%) and 17°C (28.5%) for Toronto Pearson International Airport's highest temperature on April 17, reflecting Environment Canada's latest forecasts averaging 17-19°C amid partly cloudy skies and 30% shower chances, well above the mid-April climatological norm of 12-13°C. This tight clustering stems from GFS and ECMWF ensemble agreement on mild southerly flow fostering above-seasonal warmth following recent rainy patterns on April 16, but with model spreads introducing uncertainty—full sun could push toward 18°C, while increased cloud cover or afternoon showers might cap at 15°C or below (19.7%). Key differentiators include timing of any precipitation and boundary layer mixing; watch for updated 12z model runs today for potential shifts before resolution.
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 17 Apr '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: Apr 15, 2026, 12:05 AM ET
Volume
$23,253End Date
Apr 17, 2026Market Opened
Apr 15, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...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 17 Apr '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.Trader consensus on Polymarket closely splits between 16°C (29.5%) and 17°C (28.5%) for Toronto Pearson International Airport's highest temperature on April 17, reflecting Environment Canada's latest forecasts averaging 17-19°C amid partly cloudy skies and 30% shower chances, well above the mid-April climatological norm of 12-13°C. This tight clustering stems from GFS and ECMWF ensemble agreement on mild southerly flow fostering above-seasonal warmth following recent rainy patterns on April 16, but with model spreads introducing uncertainty—full sun could push toward 18°C, while increased cloud cover or afternoon showers might cap at 15°C or below (19.7%). Key differentiators include timing of any precipitation and boundary layer mixing; watch for updated 12z model runs today for potential shifts before resolution.
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 17 Apr '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
$23,253End Date
Apr 17, 2026Market Opened
Apr 15, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Trader consensus on Polymarket closely splits between 16°C (29.5%) and 17°C (28.5%) for Toronto Pearson International Airport's highest temperature on April 17, reflecting Environment Canada's latest forecasts averaging 17-19°C amid partly cloudy skies and 30% shower chances, well above the mid-April climatological norm of 12-13°C. This tight clustering stems from GFS and ECMWF ensemble agreement on mild southerly flow fostering above-seasonal warmth following recent rainy patterns on April 16, but with model spreads introducing uncertainty—full sun could push toward 18°C, while increased cloud cover or afternoon showers might cap at 15°C or below (19.7%). Key differentiators include timing of any precipitation and boundary layer mixing; watch for updated 12z model runs today for potential shifts before resolution.
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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