Highest temperature in London on July 26?

Platform comparison

Market context

The highest temperature recorded at London City Airport on 26 July 2026 will determine which temperature band this market resolves to, with settlement based on historical weather data from Wunderground. London's summer temperatures typically peak in the mid-20s Celsius, though heat waves can push readings into the low 30s. The 0% crowd probability suggests traders are either uncertain about the specific date or treating this as a calibration exercise rather than a substantive weather forecast.

Historical July temperatures at London City Airport show considerable variation year to year. The airport's records indicate that late July typically sees highs between 22–27°C under normal conditions, with occasional excursions above 30°C during heat waves. The summer of 2022 saw extreme temperatures across the UK, with some stations recording above 40°C, though London City Airport remained somewhat moderated by its riverside location. Comparable dates in recent years—late July 2023 and 2024—produced highs in the 24–28°C range, providing a reasonable baseline for expected outcomes.

Traders should monitor the Met Office's medium-range forecasts as July 2026 approaches, particularly any signals of Atlantic high-pressure systems or continental air masses that could drive temperatures upward. Seasonal climate patterns and any announced El Niño or La Niña conditions will shape broader European weather trajectories. The settlement window closes at noon on 26 July, meaning the market resolves based on the full day's maximum temperature recorded at the airport station, with no opportunity for late-day adjustments.

Methodology

This page tracks Highest temperature in London on July 26? 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

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

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.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

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.