Current official forecasts from Environment Canada project a high of 27–28°C in Toronto on August 4 under sunny to partly cloudy skies, with no significant frontal systems or moisture expected to alter the thermal profile. This consensus from short-range models, aligned with climatological norms for early August highs near 25–27°C, underpins the market’s heaviest volume on 27°C (40%) and 28°C (28.5%). Minor ensemble spread around boundary-layer mixing and urban heat-island effects sustains modest probabilities for 26°C, while the absence of heat-advection signals keeps outcomes above 29°C below 15% combined. Updated model runs tomorrow morning will provide the final resolution inputs.
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 August 4?
Highest temperature in Toronto on August 4?
27°C 40%
28°C 29%
26°C 18%
29°C 11%
NEW
NEW
Aug 4, 2026
21°C or below
<1%
22°C
<1%
23°C
2%
24°C
10%
25°C
7%
26°C
18%
27°C
40%
28°C
29%
29°C
11%
30°C
4%
31°C or higher
4%
27°C 40%
28°C 29%
26°C 18%
29°C 11%
NEW
NEW
Aug 4, 2026
21°C or below
$0 Vol.
<1%
22°C
$39 Vol.
<1%
23°C
$0 Vol.
2%
24°C
$10 Vol.
10%
25°C
$40 Vol.
7%
26°C
$64 Vol.
18%
27°C
$0 Vol.
40%
28°C
$0 Vol.
29%
29°C
$13 Vol.
11%
30°C
$55 Vol.
4%
31°C or higher
$15 Vol.
4%
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 4 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Current official forecasts from Environment Canada project a high of 27–28°C in Toronto on August 4 under sunny to partly cloudy skies, with no significant frontal systems or moisture expected to alter the thermal profile. This consensus from short-range models, aligned with climatological norms for early August highs near 25–27°C, underpins the market’s heaviest volume on 27°C (40%) and 28°C (28.5%). Minor ensemble spread around boundary-layer mixing and urban heat-island effects sustains modest probabilities for 26°C, while the absence of heat-advection signals keeps outcomes above 29°C below 15% combined. Updated model runs tomorrow morning will provide the final resolution inputs.
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 4 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 2, 2026, 9:03 PM ET
Volume
$237End Date
Aug 4, 2026Market Opened
Aug 2, 2026, 9:03 PM 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 4 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Current official forecasts from Environment Canada project a high of 27–28°C in Toronto on August 4 under sunny to partly cloudy skies, with no significant frontal systems or moisture expected to alter the thermal profile. This consensus from short-range models, aligned with climatological norms for early August highs near 25–27°C, underpins the market’s heaviest volume on 27°C (40%) and 28°C (28.5%). Minor ensemble spread around boundary-layer mixing and urban heat-island effects sustains modest probabilities for 26°C, while the absence of heat-advection signals keeps outcomes above 29°C below 15% combined. Updated model runs tomorrow morning will provide the final resolution inputs.
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 4 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Toronto Pearson Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$237End Date
Aug 4, 2026Market Opened
Aug 2, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Current official forecasts from Environment Canada project a high of 27–28°C in Toronto on August 4 under sunny to partly cloudy skies, with no significant frontal systems or moisture expected to alter the thermal profile. This consensus from short-range models, aligned with climatological norms for early August highs near 25–27°C, underpins the market’s heaviest volume on 27°C (40%) and 28°C (28.5%). Minor ensemble spread around boundary-layer mixing and urban heat-island effects sustains modest probabilities for 26°C, while the absence of heat-advection signals keeps outcomes above 29°C below 15% combined. Updated model runs tomorrow morning will provide the final resolution inputs.
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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