**The market's near-certain positioning at 22°C reflects confirmed observational data from official Canadian monitoring stations, such as Environment Canada and Toronto Pearson International Airport, showing the day's maximum temperature reached exactly that threshold under mostly sunny to partly cloudy conditions with light northwesterly winds.** Pre-event forecasts anticipated a high near 23°C amid seasonal late-August patterns (normal highs around 24°C), but actual measurements aligned with the cooler end of model guidance as a high-pressure system promoted clear skies and moderate daytime heating without significant advection of warmer air masses. This outcome sits close to climatological norms for the date, where historical maxima have varied widely but recent years often record highs in the low-to-mid 20s. Minor uncertainty persists around final data homogenization or station-specific readings, though post-event consensus across multiple sources makes material revisions improbable.
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?
22°C 100.0%
20°C or below <1%
21°C <1%
23°C <1%
$38,359 Vol.
$38,359 Vol.
Aug 28, 2026
20°C or below
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C or higher
No
22°C 100.0%
20°C or below <1%
21°C <1%
23°C <1%
$38,359 Vol.
$38,359 Vol.
Aug 28, 2026
20°C or below
$311 Vol.
No
21°C
$2,096 Vol.
No
22°C
$12,805 Vol.
Yes
23°C
$9,418 Vol.
No
24°C
$7,541 Vol.
No
25°C
$3,122 Vol.
No
26°C
$1,944 Vol.
No
27°C
$253 Vol.
No
28°C
$341 Vol.
No
29°C
$239 Vol.
No
30°C or higher
$289 Vol.
No
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 market's near-certain positioning at 22°C reflects confirmed observational data from official Canadian monitoring stations, such as Environment Canada and Toronto Pearson International Airport, showing the day's maximum temperature reached exactly that threshold under mostly sunny to partly cloudy conditions with light northwesterly winds.** Pre-event forecasts anticipated a high near 23°C amid seasonal late-August patterns (normal highs around 24°C), but actual measurements aligned with the cooler end of model guidance as a high-pressure system promoted clear skies and moderate daytime heating without significant advection of warmer air masses. This outcome sits close to climatological norms for the date, where historical maxima have varied widely but recent years often record highs in the low-to-mid 20s. Minor uncertainty persists around final data homogenization or station-specific readings, though post-event consensus across multiple sources makes material revisions improbable.
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
$38,359End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 8:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 market's near-certain positioning at 22°C reflects confirmed observational data from official Canadian monitoring stations, such as Environment Canada and Toronto Pearson International Airport, showing the day's maximum temperature reached exactly that threshold under mostly sunny to partly cloudy conditions with light northwesterly winds.** Pre-event forecasts anticipated a high near 23°C amid seasonal late-August patterns (normal highs around 24°C), but actual measurements aligned with the cooler end of model guidance as a high-pressure system promoted clear skies and moderate daytime heating without significant advection of warmer air masses. This outcome sits close to climatological norms for the date, where historical maxima have varied widely but recent years often record highs in the low-to-mid 20s. Minor uncertainty persists around final data homogenization or station-specific readings, though post-event consensus across multiple sources makes material revisions improbable.
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
$38,359End Date
Aug 28, 2026Market Opened
Aug 26, 2026, 8:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**The market's near-certain positioning at 22°C reflects confirmed observational data from official Canadian monitoring stations, such as Environment Canada and Toronto Pearson International Airport, showing the day's maximum temperature reached exactly that threshold under mostly sunny to partly cloudy conditions with light northwesterly winds.** Pre-event forecasts anticipated a high near 23°C amid seasonal late-August patterns (normal highs around 24°C), but actual measurements aligned with the cooler end of model guidance as a high-pressure system promoted clear skies and moderate daytime heating without significant advection of warmer air masses. This outcome sits close to climatological norms for the date, where historical maxima have varied widely but recent years often record highs in the low-to-mid 20s. Minor uncertainty persists around final data homogenization or station-specific readings, though post-event consensus across multiple sources makes material revisions improbable.
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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