Highest temperature in Toronto on August 12?

Platform comparison

Market context

On 12 August 2026, Toronto will record a daily high temperature at Pearson International Airport. The market resolves to whichever temperature range bracket captures the highest reading logged in Weather Underground's Daily Observations table for that date. Settlement occurs at midday UTC, fixing the outcome based on the station's official record rather than summary forecasts.

Toronto's August climate shows consistent patterns across recent decades. Historical data from Environment and Climate Change Canada indicates that daily highs in mid-August typically range between 24–27°C, with extremes occasionally reaching 30°C or above during heat waves. The 0% crowd probability suggests traders are pricing in either extreme confidence in a specific range or uncertainty about which bracket will resolve. August 2026 forecasting at this distance carries substantial uncertainty; seasonal models from meteorological services won't solidify predictions until late July at earliest.

Traders should monitor long-range weather pattern forecasts released in late July, particularly from the Canadian Meteorological Centre and Environment Canada's extended outlooks. Any significant heat dome or cold air mass predictions for eastern Ontario in that period would shift probabilities materially. Additionally, the specific resolution mechanics—reliance on Daily Observations rather than Day High & Low summaries—mean traders should verify which measurement method typically produces higher readings at Pearson, as this technical detail could influence which temperature bracket ultimately resolves.

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 August 12? 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.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.