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Highest temperature in Toronto on April 17?

Market icon

Highest temperature in Toronto on April 17?

Apr 15

Apr 16

Apr 17

Apr 15

Apr 16

Apr 17

18°C 25%

17°C 22%

19°C 21%

20°C 16%

Polymarket
NEW

18°C 25%

17°C 22%

19°C 21%

20°C 16%

Polymarket
NEW

15°C or below

$48 Vol.

6%

16°C

$21 Vol.

11%

17°C

$9 Vol.

22%

18°C

$24 Vol.

25%

19°C

$44 Vol.

21%

20°C

$65 Vol.

16%

21°C

$27 Vol.

12%

22°C

$186 Vol.

9%

23°C

$246 Vol.

4%

24°C

$330 Vol.

3%

25°C or higher

$255 Vol.

1%

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 17 Apr '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.Environment Canada's latest forecasts for Toronto Pearson International Airport on April 17 project highs of 17-19°C under partly cloudy skies with 30-40% shower chances, anchoring trader consensus where 18°C leads at 24.5% implied probability, closely trailed by 17°C and 19°C. This clustering stems from model ensembles like GFS and ECMWF showing mild southerly flows but divergent cloud cover and moisture aloft, which could suppress peaks below 17°C or allow 20°C+ with clearer skies and stronger insolation. April norms hover near 12°C, but current upper-air patterns favor above-average warmth; key differentiators include shower timing and boundary layer mixing. Traders eye tomorrow's forecast refresh for refined guidance as resolution nears.

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 17 Apr '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.
Volume
$1,244
End Date
Apr 17, 2026
Market Opened
Apr 15, 2026, 12:05 AM ET

Resolution Source

https://www.wunderground.com/history/daily/ca/mississauga/CYYZ

Resolver

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 17 Apr '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.
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 17 Apr '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.Environment Canada's latest forecasts for Toronto Pearson International Airport on April 17 project highs of 17-19°C under partly cloudy skies with 30-40% shower chances, anchoring trader consensus where 18°C leads at 24.5% implied probability, closely trailed by 17°C and 19°C. This clustering stems from model ensembles like GFS and ECMWF showing mild southerly flows but divergent cloud cover and moisture aloft, which could suppress peaks below 17°C or allow 20°C+ with clearer skies and stronger insolation. April norms hover near 12°C, but current upper-air patterns favor above-average warmth; key differentiators include shower timing and boundary layer mixing. Traders eye tomorrow's forecast refresh for refined guidance as resolution nears.

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 17 Apr '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.
Volume
$1,244
End Date
Apr 17, 2026
Market Opened
Apr 15, 2026, 12:05 AM ET

Resolution Source

https://www.wunderground.com/history/daily/ca/mississauga/CYYZ

Resolver

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 17 Apr '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.

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Frequently Asked Questions

"Highest temperature in Toronto on April 17?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "18°C" at 25%, followed by "17°C" at 22%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 25¢ implies that the market collectively assigns a 25% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Toronto on April 17?" is a newly created market on Polymarket, launched on Apr 15, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Toronto on April 17?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Toronto on April 17?" is "18°C" at 25%, meaning the market assigns a 25% chance to that outcome. The next closest outcome is "17°C" at 22%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Toronto on April 17?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.