{"id":12929,"date":"2026-06-23T09:54:27","date_gmt":"2026-06-23T08:54:27","guid":{"rendered":"https:\/\/weatherforecast.co.uk\/blog\/?p=12929"},"modified":"2026-06-25T08:42:10","modified_gmt":"2026-06-25T07:42:10","slug":"uk-red-weather-warning-what-this-weeks-extreme-heat-means-and-how-to-stay-safe","status":"publish","type":"post","link":"https:\/\/weatherforecast.co.uk\/blog\/weather\/uk-red-weather-warning-what-this-weeks-extreme-heat-means-and-how-to-stay-safe\/","title":{"rendered":"UK Red Weather Warning: What This Week's Extreme Heat Means and How to Stay Safe"},"content":{"rendered":"\n\n\n\n

The Met Office has issued a rare red extreme heat warning<\/strong> for Wednesday and Thursday this week, as a \"heat dome\" parked over the UK and western Europe pushes temperatures towards levels almost never seen on these islands. Forecasters expect highs of at least 39\u00b0C, with a real chance of touching 40\u00b0C in the worst-affected spots \u2014 and, just as dangerously, nights that barely cool down.<\/p>\n\n\n\n

The red warning covers parts of central and southern England and Wales, running from 9am on Wednesday 24 June to 9pm on Thursday 25 June. It sits inside a wider amber warning that stretches from Monday right through to Thursday evening. A separate red heat-health alert from the UK Health Security Agency (UKHSA) has been issued for six regions of England \u2014 only the second time that top-level health alert has ever been used.<\/p>\n\n\n\n

This article explains exactly what the red warning means, what you should do to stay safe, how often the UK has seen warnings this severe, what's happening across Europe, the climate-change question everyone is asking, how the world's hottest countries cope, and where the highest temperature on Earth has ever been recorded.<\/p>\n\n\n\n

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