Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
81% | 19% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
81% | 19% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 24°C | 81% |
| 25°C | 18% |
| 26°C | 2% |
| 20°C or below | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C or higher | 0% |
Market context
Toronto’s temperature on 2 August will be set by the highest reading at Pearson Airport, and the market is really a call on whether the day finishes in a mild, warm, or notably hot range rather than on the exact decimal value. August in Toronto typically sits around the mid-20s Celsius on the daily high, with long-run August records far above that level, so the distribution is wide even though the median day is moderate.[2][18]
That helps explain why the current 0% YES reading looks detached from climate history rather than impossible in meteorological terms. Toronto’s August average high is about 26.1°C, while the city’s all-time August record reaches 38.9°C; even individual early-August dates have produced highs in the mid-30s, including 33.9°C on 2 August in the historical daily record set.[2] Recent Augusts have usually topped out in the mid-to-high 20s, with yearly August highs at Toronto often landing around 25–29°C, which is the sort of band traders would normally anchor to absent an approaching heat spike.[1][3]
The key catalyst is the short-range forecast and any heat warnings for the Greater Toronto Area, because a small shift in expected maxima can move the highest daily reading across settlement bands. Traders should watch Environment Canada and local broadcast forecasts, plus any updates from Weather Underground’s airport history page as the day progresses, since this market resolves off the Pearson Airport station rather than downtown Toronto.[15] With settlement ending at 12:00 UTC on 2 August, the market is leaning on whether the warmest part of the afternoon can arrive before the cut-off and whether cloud, rain, or lake influence suppresses the peak.
Methodology
This page tracks Highest temperature in Toronto on August 2? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.
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
- 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 political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
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