Chiswick hits 34°C today — the hottest day of the spell so far
29 July 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
The heat building over Chiswick this week takes another step up on Tuesday, with the Met Office forecasting a high of 34°C — five degrees warmer than the 29°C recorded earlier in the spell. Sunshine is expected throughout the day, with a UV index of 8 (classed as very high) and zero chance of rain. The overnight low is 19°C, so even evenings will feel warm.
With UV at that level, the NHS recommends applying SPF 30 or higher sunscreen and seeking shade between 11am and 3pm. Anyone spending time outdoors near the river or in Chiswick's parks should carry water and cover up during the hottest part of the afternoon. Young children and older residents are particularly vulnerable in sustained heat above 30°C.
Chiswick House and Gardens and Duke's Meadows both offer tree-shaded areas if you want to be outside without full sun exposure. Several of the cafés along the High Road and around Turnham Green have outdoor seating if you'd rather sit with a cool drink.
The full forecast is available via the Met Office.