Official observations from Toronto-area stations, including Environment and Climate Change Canada data, recorded a daily maximum of 24°C on September 5, 2026, under partly cloudy skies with light winds that limited further warming. Pre-event model consensus and agency forecasts had centered on highs near this value, close to the 1991–2020 climatological average high of 23.9°C for the date, producing near-certainty in the market. Resolution hinges on the precise official reading from the designated station rather than forecasts or secondary sites. A revision in post-processed data or use of an alternate measurement location could theoretically alter the outcome, though such adjustments are rare once initial reports are issued.
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 5?
Highest temperature in Toronto on September 5?
24°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$39,991 Vol.
$39,991 Vol.
Sep 5, 2026
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
100%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C or higher
<1%
24°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$39,991 Vol.
$39,991 Vol.
Sep 5, 2026
19°C or below
$444 Vol.
<1%
20°C
$332 Vol.
<1%
21°C
$1,118 Vol.
<1%
22°C
$1,751 Vol.
<1%
23°C
$5,297 Vol.
<1%
24°C
$13,368 Vol.
100%
25°C
$8,345 Vol.
<1%
26°C
$3,947 Vol.
<1%
27°C
$3,674 Vol.
<1%
28°C
$522 Vol.
<1%
29°C or higher
$1,193 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 5 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 observations from Toronto-area stations, including Environment and Climate Change Canada data, recorded a daily maximum of 24°C on September 5, 2026, under partly cloudy skies with light winds that limited further warming. Pre-event model consensus and agency forecasts had centered on highs near this value, close to the 1991–2020 climatological average high of 23.9°C for the date, producing near-certainty in the market. Resolution hinges on the precise official reading from the designated station rather than forecasts or secondary sites. A revision in post-processed data or use of an alternate measurement location could theoretically alter the outcome, though such adjustments are rare once initial reports are issued.
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 5 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 3, 2026, 8:55 AM ET
Volume
$39,991End Date
Sep 5, 2026Market Opened
Sep 3, 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 5 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 observations from Toronto-area stations, including Environment and Climate Change Canada data, recorded a daily maximum of 24°C on September 5, 2026, under partly cloudy skies with light winds that limited further warming. Pre-event model consensus and agency forecasts had centered on highs near this value, close to the 1991–2020 climatological average high of 23.9°C for the date, producing near-certainty in the market. Resolution hinges on the precise official reading from the designated station rather than forecasts or secondary sites. A revision in post-processed data or use of an alternate measurement location could theoretically alter the outcome, though such adjustments are rare once initial reports are issued.
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 5 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
$39,991End Date
Sep 5, 2026Market Opened
Sep 3, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=cyyzResolver
0x69c47De9D...Official observations from Toronto-area stations, including Environment and Climate Change Canada data, recorded a daily maximum of 24°C on September 5, 2026, under partly cloudy skies with light winds that limited further warming. Pre-event model consensus and agency forecasts had centered on highs near this value, close to the 1991–2020 climatological average high of 23.9°C for the date, producing near-certainty in the market. Resolution hinges on the precise official reading from the designated station rather than forecasts or secondary sites. A revision in post-processed data or use of an alternate measurement location could theoretically alter the outcome, though such adjustments are rare once initial reports are issued.
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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