Official observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 27 reached 18°C, aligning with trader consensus at a 100% implied probability for that outcome and driving near-total market resolution. Preliminary METAR reports captured peak readings of 17°C around mid-afternoon under broken clouds and light southerly winds, consistent with pre-event forecasts from Environment Canada projecting highs near 17–19°C amid a cool spring pattern influenced by persistent upper-level troughing over eastern North America. Scenarios that could realistically challenge this include rare post hoc data revisions from instrument recalibration or supplemental station reviews, though such adjustments are infrequent for established airport observations; final certified data expected within days via ECCC's climate archive.
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 27?
Highest temperature in Toronto on April 27?
18°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$87,750 Vol.
$87,750 Vol.
Apr 27, 2026
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C or higher
No
18°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$87,750 Vol.
$87,750 Vol.
Apr 27, 2026
10°C or below
$3,347 Vol.
No
11°C
$2,752 Vol.
No
12°C
$4,318 Vol.
No
13°C
$8,686 Vol.
No
14°C
$9,124 Vol.
No
15°C
$7,104 Vol.
No
16°C
$12,001 Vol.
No
17°C
$7,175 Vol.
No
18°C
$11,230 Vol.
Yes
19°C
$9,939 Vol.
No
20°C or higher
$12,074 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 27 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 observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 27 reached 18°C, aligning with trader consensus at a 100% implied probability for that outcome and driving near-total market resolution. Preliminary METAR reports captured peak readings of 17°C around mid-afternoon under broken clouds and light southerly winds, consistent with pre-event forecasts from Environment Canada projecting highs near 17–19°C amid a cool spring pattern influenced by persistent upper-level troughing over eastern North America. Scenarios that could realistically challenge this include rare post hoc data revisions from instrument recalibration or supplemental station reviews, though such adjustments are infrequent for established airport observations; final certified data expected within days via ECCC's climate archive.
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 27 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 25, 2026, 12:52 AM ET
Volume
$87,750End Date
Apr 27, 2026Market Opened
Apr 25, 2026, 12:52 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 27 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 observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 27 reached 18°C, aligning with trader consensus at a 100% implied probability for that outcome and driving near-total market resolution. Preliminary METAR reports captured peak readings of 17°C around mid-afternoon under broken clouds and light southerly winds, consistent with pre-event forecasts from Environment Canada projecting highs near 17–19°C amid a cool spring pattern influenced by persistent upper-level troughing over eastern North America. Scenarios that could realistically challenge this include rare post hoc data revisions from instrument recalibration or supplemental station reviews, though such adjustments are infrequent for established airport observations; final certified data expected within days via ECCC's climate archive.
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 27 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
$87,750End Date
Apr 27, 2026Market Opened
Apr 25, 2026, 12:52 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from Environment and Climate Change Canada at Toronto Pearson International Airport confirm the highest temperature on April 27 reached 18°C, aligning with trader consensus at a 100% implied probability for that outcome and driving near-total market resolution. Preliminary METAR reports captured peak readings of 17°C around mid-afternoon under broken clouds and light southerly winds, consistent with pre-event forecasts from Environment Canada projecting highs near 17–19°C amid a cool spring pattern influenced by persistent upper-level troughing over eastern North America. Scenarios that could realistically challenge this include rare post hoc data revisions from instrument recalibration or supplemental station reviews, though such adjustments are infrequent for established airport observations; final certified data expected within days via ECCC's climate archive.
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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