Environment Canada’s official forecast calls for sunny skies over Toronto on August 28, 2026, supporting a daytime high of 24 °C driven by a building high-pressure ridge and northwest flow that limits cloud cover and moisture. Clear conditions promote strong daytime radiative heating, while light winds and low dew points favor efficient warming without excessive humidex influence. Ensemble guidance shows limited spread around this value, though minor shifts in cloud timing or boundary-layer mixing could push the observed maximum a degree or two higher or lower. Historical late-August climatology centers near 25 °C, placing the current consensus near normal. Market-implied odds remain tightly balanced near the 20–30 °C thresholds because traders weigh these small but decisive forecast details ahead of the day’s maximum reading.
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 28?
Highest temperature in Toronto on August 28?
24°C 38%
23°C 30%
25°C 21%
22°C 14%
NEW
NEW
Aug 28, 2026
20°C or below
5%
21°C
6%
22°C
14%
23°C
30%
24°C
38%
25°C
21%
26°C
5%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
24°C 38%
23°C 30%
25°C 21%
22°C 14%
NEW
NEW
Aug 28, 2026
20°C or below
$0 Vol.
5%
21°C
$0 Vol.
6%
22°C
$63 Vol.
14%
23°C
$0 Vol.
30%
24°C
$10 Vol.
38%
25°C
$0 Vol.
21%
26°C
$3 Vol.
5%
27°C
$0 Vol.
<1%
28°C
$0 Vol.
<1%
29°C
$0 Vol.
<1%
30°C or higher
$0 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 28 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.Environment Canada’s official forecast calls for sunny skies over Toronto on August 28, 2026, supporting a daytime high of 24 °C driven by a building high-pressure ridge and northwest flow that limits cloud cover and moisture. Clear conditions promote strong daytime radiative heating, while light winds and low dew points favor efficient warming without excessive humidex influence. Ensemble guidance shows limited spread around this value, though minor shifts in cloud timing or boundary-layer mixing could push the observed maximum a degree or two higher or lower. Historical late-August climatology centers near 25 °C, placing the current consensus near normal. Market-implied odds remain tightly balanced near the 20–30 °C thresholds because traders weigh these small but decisive forecast details ahead of the day’s maximum reading.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 28 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 26, 2026, 8:55 PM ET
Volume
$76End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 8:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 28 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.Environment Canada’s official forecast calls for sunny skies over Toronto on August 28, 2026, supporting a daytime high of 24 °C driven by a building high-pressure ridge and northwest flow that limits cloud cover and moisture. Clear conditions promote strong daytime radiative heating, while light winds and low dew points favor efficient warming without excessive humidex influence. Ensemble guidance shows limited spread around this value, though minor shifts in cloud timing or boundary-layer mixing could push the observed maximum a degree or two higher or lower. Historical late-August climatology centers near 25 °C, placing the current consensus near normal. Market-implied odds remain tightly balanced near the 20–30 °C thresholds because traders weigh these small but decisive forecast details ahead of the day’s maximum reading.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Toronto Pearson Intl Airport Station in degrees Celsius on 28 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=cyyz
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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
$76End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 8:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Environment Canada’s official forecast calls for sunny skies over Toronto on August 28, 2026, supporting a daytime high of 24 °C driven by a building high-pressure ridge and northwest flow that limits cloud cover and moisture. Clear conditions promote strong daytime radiative heating, while light winds and low dew points favor efficient warming without excessive humidex influence. Ensemble guidance shows limited spread around this value, though minor shifts in cloud timing or boundary-layer mixing could push the observed maximum a degree or two higher or lower. Historical late-August climatology centers near 25 °C, placing the current consensus near normal. Market-implied odds remain tightly balanced near the 20–30 °C thresholds because traders weigh these small but decisive forecast details ahead of the day’s maximum reading.
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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