Pronóstico: Highest temperature in London on June 28?

Platform comparison

Market context

The real-world event is the daily high temperature recorded at London City Airport on 28 June 2026, which will determine the market outcome. Current Met Office and BBC forecasts for today indicate a maximum of 26°C with sunny intervals, suggesting the day’s peak will likely fall within the lower temperature ranges. This aligns with the crowd-implied 0% probability for the highest range, as recent June conditions in London have rarely exceeded 30°C at this airport station.

Historically, London City Airport’s June highs typically range between 18°C and 26°C, with only rare heatwaves pushing above 30°C. The hottest June day ever recorded in London was 36.4°C at Heathrow in 2018, but that station is further west and often records higher peaks than City Airport due to urban heat differences[9]. Comparable cases show that even during strong heatwaves, City Airport’s readings lag behind Heathrow by 2–4°C, making extreme ranges unlikely unless a major atmospheric shift occurs.

Traders should monitor Wunderground’s hourly updates for the day, as the market resolves only after the first data point is published[1]. Key catalysts include any sudden changes in wind direction, humidity spikes, or cloud cover that could suppress the peak temperature. While no specific news alerts have been issued for 28 June, the Met Office’s 7-day forecast remains the most reliable dependency for anticipating deviations from the 26°C baseline[2]. Any announcement of a heatwave warning from the UK Health Security Agency would be the primary signal to reassess the probability.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Pronóstico: Highest temperature in London on June 28?. 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 (US-focused) or Manifold (play-money).

Resolution & payout

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FAQ

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