Environment Canada's latest forecast for Toronto Pearson International Airport, the market's resolution station, calls for a high of 19°C today under mainly sunny skies with northwest winds shifting southerly at 15 km/h, reflecting a downward revision from prior 21°C projections amid yesterday's cool 10°C maximum and overnight low near 6°C. Trader consensus, with implied probabilities tightly clustered at 23.5% for 19°C, 31.5% for 20°C, and 26% for 21°C, hinges on afternoon boundary-layer heating and insolation potential, where light cloud breaks or enhanced vertical mixing could push peaks 1–2°C higher, consistent with mid-May climatological averages around 19–20°C. Hourly updates and GFS/ECMWF model runs this afternoon will clarify peak timing between 2–5 PM ET.
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 15?
Highest temperature in Toronto on May 15?
20°C 34%
19°C 27%
21°C 24%
18°C 12%
$33,775 Vol.
$33,775 Vol.
May 15, 2026
12°C or below
<1%
13°C
<1%
14°C
<1%
15°C
1%
16°C
<1%
17°C
2%
18°C
12%
19°C
27%
20°C
34%
21°C
24%
22°C or higher
7%
20°C 34%
19°C 27%
21°C 24%
18°C 12%
$33,775 Vol.
$33,775 Vol.
May 15, 2026
12°C or below
$5,636 Vol.
<1%
13°C
$3,551 Vol.
<1%
14°C
$1,533 Vol.
<1%
15°C
$3,679 Vol.
1%
16°C
$3,827 Vol.
<1%
17°C
$3,779 Vol.
2%
18°C
$2,254 Vol.
12%
19°C
$3,202 Vol.
27%
20°C
$1,815 Vol.
34%
21°C
$2,013 Vol.
24%
22°C or higher
$2,483 Vol.
7%
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 15 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's latest forecast for Toronto Pearson International Airport, the market's resolution station, calls for a high of 19°C today under mainly sunny skies with northwest winds shifting southerly at 15 km/h, reflecting a downward revision from prior 21°C projections amid yesterday's cool 10°C maximum and overnight low near 6°C. Trader consensus, with implied probabilities tightly clustered at 23.5% for 19°C, 31.5% for 20°C, and 26% for 21°C, hinges on afternoon boundary-layer heating and insolation potential, where light cloud breaks or enhanced vertical mixing could push peaks 1–2°C higher, consistent with mid-May climatological averages around 19–20°C. Hourly updates and GFS/ECMWF model runs this afternoon will clarify peak timing between 2–5 PM ET.
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 15 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 13, 2026, 12:05 AM ET
Volume
$33,775End Date
May 15, 2026Market Opened
May 13, 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 15 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's latest forecast for Toronto Pearson International Airport, the market's resolution station, calls for a high of 19°C today under mainly sunny skies with northwest winds shifting southerly at 15 km/h, reflecting a downward revision from prior 21°C projections amid yesterday's cool 10°C maximum and overnight low near 6°C. Trader consensus, with implied probabilities tightly clustered at 23.5% for 19°C, 31.5% for 20°C, and 26% for 21°C, hinges on afternoon boundary-layer heating and insolation potential, where light cloud breaks or enhanced vertical mixing could push peaks 1–2°C higher, consistent with mid-May climatological averages around 19–20°C. Hourly updates and GFS/ECMWF model runs this afternoon will clarify peak timing between 2–5 PM ET.
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 15 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
$33,775End Date
May 15, 2026Market Opened
May 13, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Environment Canada's latest forecast for Toronto Pearson International Airport, the market's resolution station, calls for a high of 19°C today under mainly sunny skies with northwest winds shifting southerly at 15 km/h, reflecting a downward revision from prior 21°C projections amid yesterday's cool 10°C maximum and overnight low near 6°C. Trader consensus, with implied probabilities tightly clustered at 23.5% for 19°C, 31.5% for 20°C, and 26% for 21°C, hinges on afternoon boundary-layer heating and insolation potential, where light cloud breaks or enhanced vertical mixing could push peaks 1–2°C higher, consistent with mid-May climatological averages around 19–20°C. Hourly updates and GFS/ECMWF model runs this afternoon will clarify peak timing between 2–5 PM ET.
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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