Chiswick hits 37°C today — the hottest day of the spell so far

Wednesday is set to be the peak of the current hot spell, with the Met Office forecasting a high of 37°C in Chiswick — up sharply from the 32°C recorded earlier this week. Overnight temperatures are expected to remain very warm at around 23°C, which may make sleeping uncomfortable, particularly in homes without air conditioning.

The UV index is rated at 7 (high), so sun protection is strongly advisable if you are spending time outdoors. The chance of rain remains minimal at just 4%. Full forecast via the Met Office.

At temperatures this high, the NHS recommends staying out of direct sunlight between 11am and 3pm, keeping rooms cool with closed blinds during the day, and checking on elderly neighbours and young children. Residents with health concerns should keep an eye on official health guidance.

Local green spaces such as Chiswick House grounds and the Thames riverside path tend to benefit from shade and a river breeze, and make for cooler alternatives to south-facing gardens during the hottest hours of the afternoon.