Official forecasts from Environment Canada and ensemble models indicate a high near 23°C on September 7 under sunny conditions with light southerly flow, consistent with the long-term average of 23.7°C for the date. Trader emphasis on 24–25°C outcomes reflects minor model disagreements on afternoon cloud cover, wind shifts, and Lake Ontario's moderating lake-breeze effect, which can suppress or enhance peak readings by 1–2°C depending on timing. With probabilities closely split, uncertainty centers on exact diurnal heating rates and measurement at primary stations like Pearson Airport, where small revisions in guidance before resolution could favor the lower or higher side of the range.
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 September 7?
Highest temperature in Toronto on September 7?
25°C 37%
24°C 33%
26°C 14%
23°C 12%
NEW
NEW
Sep 7, 2026
20°C or below
2%
21°C
3%
22°C
5%
23°C
12%
24°C
33%
25°C
37%
26°C
14%
27°C
4%
28°C
2%
29°C
<1%
30°C or higher
<1%
25°C 37%
24°C 33%
26°C 14%
23°C 12%
NEW
NEW
Sep 7, 2026
20°C or below
$0 Vol.
2%
21°C
$110 Vol.
3%
22°C
$184 Vol.
5%
23°C
$258 Vol.
12%
24°C
$155 Vol.
33%
25°C
$373 Vol.
37%
26°C
$218 Vol.
14%
27°C
$110 Vol.
4%
28°C
$123 Vol.
2%
29°C
$125 Vol.
<1%
30°C or higher
$125 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 7 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Official forecasts from Environment Canada and ensemble models indicate a high near 23°C on September 7 under sunny conditions with light southerly flow, consistent with the long-term average of 23.7°C for the date. Trader emphasis on 24–25°C outcomes reflects minor model disagreements on afternoon cloud cover, wind shifts, and Lake Ontario's moderating lake-breeze effect, which can suppress or enhance peak readings by 1–2°C depending on timing. With probabilities closely split, uncertainty centers on exact diurnal heating rates and measurement at primary stations like Pearson Airport, where small revisions in guidance before resolution could favor the lower or higher side of the range.
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 7 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 5, 2026, 8:55 AM ET
Volume
$1,781End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 8:55 AM 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 7 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.Official forecasts from Environment Canada and ensemble models indicate a high near 23°C on September 7 under sunny conditions with light southerly flow, consistent with the long-term average of 23.7°C for the date. Trader emphasis on 24–25°C outcomes reflects minor model disagreements on afternoon cloud cover, wind shifts, and Lake Ontario's moderating lake-breeze effect, which can suppress or enhance peak readings by 1–2°C depending on timing. With probabilities closely split, uncertainty centers on exact diurnal heating rates and measurement at primary stations like Pearson Airport, where small revisions in guidance before resolution could favor the lower or higher side of the range.
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 7 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$1,781End Date
Sep 7, 2026Market Opened
Sep 5, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Official forecasts from Environment Canada and ensemble models indicate a high near 23°C on September 7 under sunny conditions with light southerly flow, consistent with the long-term average of 23.7°C for the date. Trader emphasis on 24–25°C outcomes reflects minor model disagreements on afternoon cloud cover, wind shifts, and Lake Ontario's moderating lake-breeze effect, which can suppress or enhance peak readings by 1–2°C depending on timing. With probabilities closely split, uncertainty centers on exact diurnal heating rates and measurement at primary stations like Pearson Airport, where small revisions in guidance before resolution could favor the lower or higher side of the range.
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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