Official meteorological observations from Environment Canada and Toronto's principal weather stations, including Toronto Pearson International Airport, confirm the highest temperature on April 28 reached exactly 17°C, aligning with trader consensus at virtually 100% implied probability for that outcome. This positioning stems from real-time data logged during a mild spring day under partly cloudy skies with light winds, consistent with recent forecast models from the Canadian Meteorological Centre showing daytime highs in the mid-teens Celsius amid lingering cool continental air masses. Such verified station measurements carry authoritative weight for market resolution, with negligible risk of revision barring an unprecedented data error—scenarios like instrument malfunction or post-audit discrepancies occur in under 0.1% of cases historically. No further updates expected as records finalize.
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 28?
Highest temperature in Toronto on April 28?
17°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$144,553 Vol.
$144,553 Vol.
Apr 28, 2026
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
19°C or higher
No
17°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$144,553 Vol.
$144,553 Vol.
Apr 28, 2026
9°C or below
$1,864 Vol.
No
10°C
$9,117 Vol.
No
11°C
$9,089 Vol.
No
12°C
$6,810 Vol.
No
13°C
$8,113 Vol.
No
14°C
$9,843 Vol.
No
15°C
$22,046 Vol.
No
16°C
$21,875 Vol.
No
17°C
$19,966 Vol.
Yes
18°C
$18,191 Vol.
No
19°C or higher
$17,640 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 28 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 meteorological observations from Environment Canada and Toronto's principal weather stations, including Toronto Pearson International Airport, confirm the highest temperature on April 28 reached exactly 17°C, aligning with trader consensus at virtually 100% implied probability for that outcome. This positioning stems from real-time data logged during a mild spring day under partly cloudy skies with light winds, consistent with recent forecast models from the Canadian Meteorological Centre showing daytime highs in the mid-teens Celsius amid lingering cool continental air masses. Such verified station measurements carry authoritative weight for market resolution, with negligible risk of revision barring an unprecedented data error—scenarios like instrument malfunction or post-audit discrepancies occur in under 0.1% of cases historically. No further updates expected as records finalize.
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 28 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 26, 2026, 12:23 AM ET
Volume
$144,553End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:23 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 28 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 meteorological observations from Environment Canada and Toronto's principal weather stations, including Toronto Pearson International Airport, confirm the highest temperature on April 28 reached exactly 17°C, aligning with trader consensus at virtually 100% implied probability for that outcome. This positioning stems from real-time data logged during a mild spring day under partly cloudy skies with light winds, consistent with recent forecast models from the Canadian Meteorological Centre showing daytime highs in the mid-teens Celsius amid lingering cool continental air masses. Such verified station measurements carry authoritative weight for market resolution, with negligible risk of revision barring an unprecedented data error—scenarios like instrument malfunction or post-audit discrepancies occur in under 0.1% of cases historically. No further updates expected as records finalize.
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 28 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
$144,553End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:23 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations from Environment Canada and Toronto's principal weather stations, including Toronto Pearson International Airport, confirm the highest temperature on April 28 reached exactly 17°C, aligning with trader consensus at virtually 100% implied probability for that outcome. This positioning stems from real-time data logged during a mild spring day under partly cloudy skies with light winds, consistent with recent forecast models from the Canadian Meteorological Centre showing daytime highs in the mid-teens Celsius amid lingering cool continental air masses. Such verified station measurements carry authoritative weight for market resolution, with negligible risk of revision barring an unprecedented data error—scenarios like instrument malfunction or post-audit discrepancies occur in under 0.1% of cases historically. No further updates expected as records finalize.
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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