Highest temperature in Toronto on May 24?

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Market context

Toronto's weather on 24 May 2026 will be recorded at Pearson International Airport, with the market settling on whichever temperature band captures the day's high. The settlement relies on historical data from Weather Underground, pulling the maximum temperature logged across all daylight and evening hours at the airport's official weather station in Mississauga.

May in Toronto typically sees highs between 18°C and 24°C, though the range widens considerably depending on air mass positioning and frontal systems. Historical records show that late May temperatures at Pearson have reached into the low 30s Celsius during warm spells, whilst cooler maritime influences can hold highs to the mid-teens. The 0% crowd probability suggests traders are either uncertain about the specific range options available or awaiting clarity on the temperature bands against which they'll be betting.

The critical variable for this market is the large-scale atmospheric pattern establishing itself in late May 2026. High-pressure systems tracking northward from the American South would drive temperatures well above seasonal norms, whilst a stalled low-pressure system or northerly flow could suppress highs significantly. Traders should monitor seasonal forecasting models from Environment and Climate Change Canada as May approaches, particularly any signals about whether the jet stream will favour warm continental air or cooler polar intrusions during that specific week.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Toronto on May 24? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.