Official observations from Environment and Climate Change Canada (ECCC) at Toronto Pearson International Airport, the city's primary climate station, recorded a high temperature of exactly 13°C on May 10, solidifying trader consensus at 100% implied probability for that outcome. This aligns with prevailing synoptic conditions: a deep upper-level trough over eastern Canada funneled cool northerly flows, suppressing temperatures under persistent cloud cover and light precipitation, as forecasted by Canadian Meteorological Centre (CMC) models like GEM and global ensembles. Historical May climatology supports such cool snaps, with average highs around 17–18°C but frequent dips into the low teens. Realistic challenges are minimal post-observation—only a formal data revision from ECCC quality control or a higher reading from a secondary downtown station could shift it, though none have materialized in initial reports.
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 May 10?
Highest temperature in Toronto on May 10?
13°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$59,489 Vol.
$59,489 Vol.
May 10, 2026
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C or higher
No
13°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$59,489 Vol.
$59,489 Vol.
May 10, 2026
9°C or below
$6,767 Vol.
No
10°C
$4,053 Vol.
No
11°C
$6,057 Vol.
No
12°C
$8,372 Vol.
No
13°C
$7,317 Vol.
Yes
14°C
$5,046 Vol.
No
15°C
$5,286 Vol.
No
16°C
$3,842 Vol.
No
17°C
$4,730 Vol.
No
18°C
$4,025 Vol.
No
19°C or higher
$3,994 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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Official observations from Environment and Climate Change Canada (ECCC) at Toronto Pearson International Airport, the city's primary climate station, recorded a high temperature of exactly 13°C on May 10, solidifying trader consensus at 100% implied probability for that outcome. This aligns with prevailing synoptic conditions: a deep upper-level trough over eastern Canada funneled cool northerly flows, suppressing temperatures under persistent cloud cover and light precipitation, as forecasted by Canadian Meteorological Centre (CMC) models like GEM and global ensembles. Historical May climatology supports such cool snaps, with average highs around 17–18°C but frequent dips into the low teens. Realistic challenges are minimal post-observation—only a formal data revision from ECCC quality control or a higher reading from a secondary downtown station could shift it, though none have materialized in initial reports.
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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 8, 2026, 12:06 AM ET
Volume
$59,489End Date
May 10, 2026Market Opened
May 8, 2026, 12:06 AM 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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Official observations from Environment and Climate Change Canada (ECCC) at Toronto Pearson International Airport, the city's primary climate station, recorded a high temperature of exactly 13°C on May 10, solidifying trader consensus at 100% implied probability for that outcome. This aligns with prevailing synoptic conditions: a deep upper-level trough over eastern Canada funneled cool northerly flows, suppressing temperatures under persistent cloud cover and light precipitation, as forecasted by Canadian Meteorological Centre (CMC) models like GEM and global ensembles. Historical May climatology supports such cool snaps, with average highs around 17–18°C but frequent dips into the low teens. Realistic challenges are minimal post-observation—only a formal data revision from ECCC quality control or a higher reading from a secondary downtown station could shift it, though none have materialized in initial reports.
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 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Toronto Pearson Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$59,489End Date
May 10, 2026Market Opened
May 8, 2026, 12:06 AM ETResolution Source
https://www.wunderground.com/history/daily/ca/mississauga/CYYZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from Environment and Climate Change Canada (ECCC) at Toronto Pearson International Airport, the city's primary climate station, recorded a high temperature of exactly 13°C on May 10, solidifying trader consensus at 100% implied probability for that outcome. This aligns with prevailing synoptic conditions: a deep upper-level trough over eastern Canada funneled cool northerly flows, suppressing temperatures under persistent cloud cover and light precipitation, as forecasted by Canadian Meteorological Centre (CMC) models like GEM and global ensembles. Historical May climatology supports such cool snaps, with average highs around 17–18°C but frequent dips into the low teens. Realistic challenges are minimal post-observation—only a formal data revision from ECCC quality control or a higher reading from a secondary downtown station could shift it, though none have materialized in initial reports.
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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