Recent forecast updates from Environment and Climate Change Canada and ensemble models place Toronto’s July 10 high near 27–28°C under partly cloudy skies with a modest chance of showers or thunderstorms, driving the tight clustering of market-implied probabilities around those outcomes. Daytime mixing of a warm, humid airmass, southeasterly flow, and variable cloud cover introduce the main uncertainties that differentiate 27°C from 29°C scenarios, while historical July averages near 27°C provide a climatological baseline. Updated model runs expected overnight will clarify how any overnight cooling or morning convection shifts the peak reading, allowing traders to refine positions before resolution.
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 July 10?
Highest temperature in Toronto on July 10?
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$31,926 Vol.
$31,926 Vol.
Jul 10, 2026
23°C or below
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C or higher
No
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$31,926 Vol.
$31,926 Vol.
Jul 10, 2026
23°C or below
$597 Vol.
No
24°C
$896 Vol.
No
25°C
$5,215 Vol.
No
26°C
$6,609 Vol.
Yes
27°C
$5,399 Vol.
No
28°C
$5,068 Vol.
No
29°C
$2,507 Vol.
No
30°C
$2,320 Vol.
No
31°C
$1,028 Vol.
No
32°C
$1,199 Vol.
No
33°C or higher
$1,089 Vol.
No
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 10 Jul '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.Recent forecast updates from Environment and Climate Change Canada and ensemble models place Toronto’s July 10 high near 27–28°C under partly cloudy skies with a modest chance of showers or thunderstorms, driving the tight clustering of market-implied probabilities around those outcomes. Daytime mixing of a warm, humid airmass, southeasterly flow, and variable cloud cover introduce the main uncertainties that differentiate 27°C from 29°C scenarios, while historical July averages near 27°C provide a climatological baseline. Updated model runs expected overnight will clarify how any overnight cooling or morning convection shifts the peak reading, allowing traders to refine positions before resolution.
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 10 Jul '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.
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: Jul 8, 2026, 9:02 PM ET
Volume
$31,926End Date
Jul 10, 2026Market Opened
Jul 8, 2026, 9:02 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 10 Jul '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.Recent forecast updates from Environment and Climate Change Canada and ensemble models place Toronto’s July 10 high near 27–28°C under partly cloudy skies with a modest chance of showers or thunderstorms, driving the tight clustering of market-implied probabilities around those outcomes. Daytime mixing of a warm, humid airmass, southeasterly flow, and variable cloud cover introduce the main uncertainties that differentiate 27°C from 29°C scenarios, while historical July averages near 27°C provide a climatological baseline. Updated model runs expected overnight will clarify how any overnight cooling or morning convection shifts the peak reading, allowing traders to refine positions before resolution.
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 10 Jul '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.
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.
Volume
$31,926End Date
Jul 10, 2026Market Opened
Jul 8, 2026, 9:02 PM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent forecast updates from Environment and Climate Change Canada and ensemble models place Toronto’s July 10 high near 27–28°C under partly cloudy skies with a modest chance of showers or thunderstorms, driving the tight clustering of market-implied probabilities around those outcomes. Daytime mixing of a warm, humid airmass, southeasterly flow, and variable cloud cover introduce the main uncertainties that differentiate 27°C from 29°C scenarios, while historical July averages near 27°C provide a climatological baseline. Updated model runs expected overnight will clarify how any overnight cooling or morning convection shifts the peak reading, allowing traders to refine positions before resolution.
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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