Copernicus Image of the Day: Heatwave affecting Western Europe in the third decade of June 2026

Today’s Image of the Day from the European Union’s Earth Observation programme. That’s a lot of red.

From the image description:

A severe heatwave is currently affecting western Europe, France and Spain being the most affected countries. According to the French Meteorological Agency Météo France, Tuesday 23 June was reported the hottest day recorded since measurements began in 1947. In Spain, the State Meteorological Agency (AEMET) issued a red alert for above average temperatures in several areas in the north of the Iberian Peninsula, including Gipuzkoa, Bizkaia, and Cantabria cities.

This data visualisation, based on data from the Copernicus Sentinel-3 satellites acquired on 23 June 2026 at 09:54 UTC, shows the Land Surface Temperatures (LST) across central and southern France, and northern Spain. Extensive red and purple areas are visible, indicating peaks of the LST exceeding 50°C. It should be noted that LST values reflect ground surface temperature rather than air temperature. Although the two are broadly correlated, they can differ significantly.

Link.