Highest temperature in Toronto on July 16?

Platform comparison

Market context

Toronto Pearson International Airport recorded extreme heat on 16 July 2025, triggering a public health advisory and an extreme heat warning across the city. Historical data shows mid-July in Toronto frequently sees temperatures exceeding 30°C, with the 2025 event reaching levels that prompted air quality alerts and restrictions on outdoor activity for vulnerable groups [1]. The current 0% crowd-implied probability for a “YES” outcome appears inconsistent with these recurring thermal patterns, suggesting the market may be mispricing the likelihood of a high-temperature day based on insufficient historical weighting rather than actual climatic improbability.

Traders should monitor the official Wunderground daily history for CYYZ (Toronto Pearson) as the settlement window closes at 12:00 UTC on 16 July 2026, ensuring the resolution source aligns with the recorded peak for that calendar day. While no specific weather forecast announcements have been issued for 2026 yet, seasonal climate models for southern Ontario typically project above-average temperatures for mid-July, increasing the probability of a record or near-record high. Watch for any sudden shifts in regional pressure systems or humidity forecasts from Environment Canada, as these are the primary catalysts that could push temperatures into the upper ranges required for a “YES” resolution.

Sources: 1

Methodology

Sports-specific comparison page for Highest temperature in Toronto on July 16?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.