**Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on April 30, 2026, peaked at exactly 12°C**, aligning with 100% market-implied probability and trader consensus backed by real capital. This matches pre-event hourly forecasts from Environment Canada, which projected a 12°C high under partly cloudy skies, cool northerly winds, and typical early spring atmospheric conditions suppressing stronger warming—below the long-term April 30 climatological normal of around 13.4°C. Model consensus from days prior showed low confidence in exceeding 12°C due to persistent cloud cover and lack of solar heating. While authoritative measurements resolve the market, rare challenges could arise from data audits, sensor recalibrations, or preliminary-to-final adjustments, though historical verification processes rarely alter peaks by 1°C.
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 30?
Highest temperature in Toronto on April 30?
12°C 100.0%
6°C or below <1%
7°C <1%
8°C <1%
$82,687 Vol.
$82,687 Vol.
Apr 30, 2026
6°C or below
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
Yes
13°C
No
14°C
No
15°C
No
16°C or higher
No
12°C 100.0%
6°C or below <1%
7°C <1%
8°C <1%
$82,687 Vol.
$82,687 Vol.
Apr 30, 2026
6°C or below
$2,447 Vol.
No
7°C
$3,288 Vol.
No
8°C
$6,813 Vol.
No
9°C
$5,550 Vol.
No
10°C
$14,657 Vol.
No
11°C
$9,025 Vol.
No
12°C
$10,860 Vol.
Yes
13°C
$14,681 Vol.
No
14°C
$7,220 Vol.
No
15°C
$2,406 Vol.
No
16°C or higher
$5,740 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 30 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.**Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on April 30, 2026, peaked at exactly 12°C**, aligning with 100% market-implied probability and trader consensus backed by real capital. This matches pre-event hourly forecasts from Environment Canada, which projected a 12°C high under partly cloudy skies, cool northerly winds, and typical early spring atmospheric conditions suppressing stronger warming—below the long-term April 30 climatological normal of around 13.4°C. Model consensus from days prior showed low confidence in exceeding 12°C due to persistent cloud cover and lack of solar heating. While authoritative measurements resolve the market, rare challenges could arise from data audits, sensor recalibrations, or preliminary-to-final adjustments, though historical verification processes rarely alter peaks by 1°C.
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 30 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 28, 2026, 1:37 PM ET
Volume
$82,687End Date
Apr 30, 2026Market Opened
Apr 28, 2026, 1:37 PM 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 30 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.**Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on April 30, 2026, peaked at exactly 12°C**, aligning with 100% market-implied probability and trader consensus backed by real capital. This matches pre-event hourly forecasts from Environment Canada, which projected a 12°C high under partly cloudy skies, cool northerly winds, and typical early spring atmospheric conditions suppressing stronger warming—below the long-term April 30 climatological normal of around 13.4°C. Model consensus from days prior showed low confidence in exceeding 12°C due to persistent cloud cover and lack of solar heating. While authoritative measurements resolve the market, rare challenges could arise from data audits, sensor recalibrations, or preliminary-to-final adjustments, though historical verification processes rarely alter peaks by 1°C.
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 30 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
$82,687End Date
Apr 30, 2026Market Opened
Apr 28, 2026, 1:37 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Official Environment and Climate Change Canada observations at Toronto Pearson International Airport confirm the highest temperature on April 30, 2026, peaked at exactly 12°C**, aligning with 100% market-implied probability and trader consensus backed by real capital. This matches pre-event hourly forecasts from Environment Canada, which projected a 12°C high under partly cloudy skies, cool northerly winds, and typical early spring atmospheric conditions suppressing stronger warming—below the long-term April 30 climatological normal of around 13.4°C. Model consensus from days prior showed low confidence in exceeding 12°C due to persistent cloud cover and lack of solar heating. While authoritative measurements resolve the market, rare challenges could arise from data audits, sensor recalibrations, or preliminary-to-final adjustments, though historical verification processes rarely alter peaks by 1°C.
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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