Current short-range forecasts from multiple models place Toronto’s maximum temperature on August 5 near 27–29 °C, aligning with the market’s heaviest trading on those outcomes. Ensemble guidance shows a ridge of high pressure promoting mostly sunny skies and light southerly flow, with limited moisture to moderate daytime heating. Historical climatology for early August in the GTA supports highs in this range when similar synoptic setups occur. Minor model spread arises mainly from uncertainties in boundary-layer mixing and any late-day cloud development, keeping the distribution centered on 28–29 °C while assigning lower probabilities to outliers above 31 °C or below 26 °C. Environment Canada and private guidance will issue final updates overnight, after which the official observed maximum will resolve the market.
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 5?
Highest temperature in Toronto on August 5?
29°C 41%
28°C 26%
30°C 18%
27°C 7%
NEW
NEW
Aug 5, 2026
23°C or below
1%
24°C
1%
25°C
1%
26°C
3%
27°C
7%
28°C
26%
29°C
41%
30°C
18%
31°C
7%
32°C
3%
33°C or higher
2%
29°C 41%
28°C 26%
30°C 18%
27°C 7%
NEW
NEW
Aug 5, 2026
23°C or below
$127 Vol.
1%
24°C
$123 Vol.
1%
25°C
$26 Vol.
1%
26°C
$44 Vol.
3%
27°C
$71 Vol.
7%
28°C
$293 Vol.
26%
29°C
$317 Vol.
41%
30°C
$63 Vol.
18%
31°C
$57 Vol.
7%
32°C
$122 Vol.
3%
33°C or higher
$96 Vol.
2%
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 5 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 short-range forecasts from multiple models place Toronto’s maximum temperature on August 5 near 27–29 °C, aligning with the market’s heaviest trading on those outcomes. Ensemble guidance shows a ridge of high pressure promoting mostly sunny skies and light southerly flow, with limited moisture to moderate daytime heating. Historical climatology for early August in the GTA supports highs in this range when similar synoptic setups occur. Minor model spread arises mainly from uncertainties in boundary-layer mixing and any late-day cloud development, keeping the distribution centered on 28–29 °C while assigning lower probabilities to outliers above 31 °C or below 26 °C. Environment Canada and private guidance will issue final updates overnight, after which the official observed maximum will resolve the market.
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 5 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 3, 2026, 9:02 PM ET
Volume
$1,338End Date
Aug 5, 2026Market Opened
Aug 3, 2026, 9:02 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 5 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 short-range forecasts from multiple models place Toronto’s maximum temperature on August 5 near 27–29 °C, aligning with the market’s heaviest trading on those outcomes. Ensemble guidance shows a ridge of high pressure promoting mostly sunny skies and light southerly flow, with limited moisture to moderate daytime heating. Historical climatology for early August in the GTA supports highs in this range when similar synoptic setups occur. Minor model spread arises mainly from uncertainties in boundary-layer mixing and any late-day cloud development, keeping the distribution centered on 28–29 °C while assigning lower probabilities to outliers above 31 °C or below 26 °C. Environment Canada and private guidance will issue final updates overnight, after which the official observed maximum will resolve the market.
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 5 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
$1,338End Date
Aug 5, 2026Market Opened
Aug 3, 2026, 9:02 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Current short-range forecasts from multiple models place Toronto’s maximum temperature on August 5 near 27–29 °C, aligning with the market’s heaviest trading on those outcomes. Ensemble guidance shows a ridge of high pressure promoting mostly sunny skies and light southerly flow, with limited moisture to moderate daytime heating. Historical climatology for early August in the GTA supports highs in this range when similar synoptic setups occur. Minor model spread arises mainly from uncertainties in boundary-layer mixing and any late-day cloud development, keeping the distribution centered on 28–29 °C while assigning lower probabilities to outliers above 31 °C or below 26 °C. Environment Canada and private guidance will issue final updates overnight, after which the official observed maximum will resolve the market.
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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