Environment Canada forecasts a high of 28°C for Toronto on August 8 under a mix of sun and cloud with a 30% chance of showers, while other models and guidance indicate potential for 29°C if daytime heating peaks amid limited precipitation and lighter winds. These closely matched market-implied odds around 28–29°C reflect genuine forecast uncertainty in maximum temperature, driven by variables such as cloud cover modulating solar radiation, convective development timing, and surface moisture from recent conditions. Official agencies note typical August climatology near 26–27°C, with current guidance emphasizing modest warming potential before any shower activity suppresses readings. Updated model runs and afternoon observations will refine resolution criteria tied to the daily maximum.
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 8?
29°C 40%
28°C 31%
30°C 21%
27°C 7%
$17,897 Vol.
$17,897 Vol.
24°C or below
<1%
25°C
1%
26°C
1%
27°C
7%
28°C
31%
29°C
40%
30°C
21%
31°C
4%
32°C
<1%
33°C
<1%
34°C or higher
<1%
29°C 40%
28°C 31%
30°C 21%
27°C 7%
$17,897 Vol.
$17,897 Vol.
24°C or below
<1%
25°C
1%
26°C
1%
27°C
7%
28°C
31%
29°C
40%
30°C
21%
31°C
4%
32°C
<1%
33°C
<1%
34°C or higher
<1%
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 8 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.
Market Opened: Aug 6, 2026, 9:02 PM ET
Resolution 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 8 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.
Resolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Environment Canada forecasts a high of 28°C for Toronto on August 8 under a mix of sun and cloud with a 30% chance of showers, while other models and guidance indicate potential for 29°C if daytime heating peaks amid limited precipitation and lighter winds. These closely matched market-implied odds around 28–29°C reflect genuine forecast uncertainty in maximum temperature, driven by variables such as cloud cover modulating solar radiation, convective development timing, and surface moisture from recent conditions. Official agencies note typical August climatology near 26–27°C, with current guidance emphasizing modest warming potential before any shower activity suppresses readings. Updated model runs and afternoon observations will refine resolution criteria tied to the daily maximum.
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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