Another scorcher in Chiswick today — 33°C with UV index 9
8 July 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Tuesday is shaping up to be one of the hottest days of the summer so far, with the Met Office forecasting a high of 33°C for Chiswick, clear blue skies throughout and a UV index of 9 — classed as very high. There is no chance of rain, making it a genuinely brilliant day to be outdoors.
That UV index is worth taking seriously. At level 9, unprotected skin can burn in as little as 15 to 20 minutes around midday. Sun cream of at least SPF 30, a hat and sunglasses are strongly recommended, particularly for children. Try to seek shade between 11am and 3pm when UV radiation peaks.
For those making use of Chiswick's green spaces — Dukes Meadows, Turnham Green or the riverside path — it is also worth carrying water, as temperatures are expected to stay well above 20°C even into the evening, with a low of 22°C overnight. A lovely day, but a warm one to navigate carefully. Full forecast from the Met Office.