Strong southwesterly flow combined with a building upper-level ridge produced sunny, warm conditions that pushed Toronto's daytime high to 30°C or above on June 4, according to the latest Environment Canada observations. This synoptic pattern overrode typical early-June climatology, where average highs hover near 22–24°C, and aligned with model consensus from prior days showing minimal cooling influence from nearby Great Lakes waters. With the date now passed and official measurements confirming the threshold, trader consensus at 100% implied probability for 30°C or higher reflects verified data rather than forecast uncertainty. Only an improbable revision to the official record from Pearson International Airport or another designated station could alter 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 June 4?
Highest temperature in Toronto on June 4?
30°C or higher 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$79,477 Vol.
$79,477 Vol.
Jun 4, 2026
20°C or below
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
100%
30°C or higher 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$79,477 Vol.
$79,477 Vol.
Jun 4, 2026
20°C or below
$709 Vol.
<1%
21°C
$295 Vol.
<1%
22°C
$335 Vol.
<1%
23°C
$429 Vol.
<1%
24°C
$2,460 Vol.
<1%
25°C
$1,793 Vol.
<1%
26°C
$2,341 Vol.
<1%
27°C
$3,421 Vol.
<1%
28°C
$6,196 Vol.
<1%
29°C
$47,250 Vol.
<1%
30°C or higher
$14,250 Vol.
100%
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 4 Jun '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.Strong southwesterly flow combined with a building upper-level ridge produced sunny, warm conditions that pushed Toronto's daytime high to 30°C or above on June 4, according to the latest Environment Canada observations. This synoptic pattern overrode typical early-June climatology, where average highs hover near 22–24°C, and aligned with model consensus from prior days showing minimal cooling influence from nearby Great Lakes waters. With the date now passed and official measurements confirming the threshold, trader consensus at 100% implied probability for 30°C or higher reflects verified data rather than forecast uncertainty. Only an improbable revision to the official record from Pearson International Airport or another designated station could alter 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 4 Jun '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: Jun 2, 2026, 1:04 AM ET
Volume
$79,477End Date
Jun 4, 2026Market Opened
Jun 2, 2026, 1:04 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...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 4 Jun '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.Strong southwesterly flow combined with a building upper-level ridge produced sunny, warm conditions that pushed Toronto's daytime high to 30°C or above on June 4, according to the latest Environment Canada observations. This synoptic pattern overrode typical early-June climatology, where average highs hover near 22–24°C, and aligned with model consensus from prior days showing minimal cooling influence from nearby Great Lakes waters. With the date now passed and official measurements confirming the threshold, trader consensus at 100% implied probability for 30°C or higher reflects verified data rather than forecast uncertainty. Only an improbable revision to the official record from Pearson International Airport or another designated station could alter 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 4 Jun '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
$79,477End Date
Jun 4, 2026Market Opened
Jun 2, 2026, 1:04 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Strong southwesterly flow combined with a building upper-level ridge produced sunny, warm conditions that pushed Toronto's daytime high to 30°C or above on June 4, according to the latest Environment Canada observations. This synoptic pattern overrode typical early-June climatology, where average highs hover near 22–24°C, and aligned with model consensus from prior days showing minimal cooling influence from nearby Great Lakes waters. With the date now passed and official measurements confirming the threshold, trader consensus at 100% implied probability for 30°C or higher reflects verified data rather than forecast uncertainty. Only an improbable revision to the official record from Pearson International Airport or another designated station could alter resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions