2026 Heat Action Day: Cities Beat the Heat

2 June marks the 5th edition of Heat Action Day (HAD), a global day of action and awareness on extreme heat.

In 2026, HAD’s theme is indoor heat. It puts the accent on the serious health risks from exposure to heat inside homes, or in public and privately managed facilities such as schools, health facilities, prisons, and care homes. Key solutions include access to cool places, better building materials and structures that passively cool, as well as the reduction of the urban heat island effect.

Extreme heatwaves are made significantly more likely by the changing climate of our Earth. WMO’s State of the Global Climate report recently confirmed that 2015-2025 are the hottest 11-years on record, with an average temperature in 2025 about 1,43°C above the 1850-1900 average, making 2025 the second or third hottest year on record. In 2025, new heat records and abnormal heatwaves affected China, central Asia and Siberia, Mexico, the United States of America, the Mediterranean, the Iberian Peninsula, Central Europe and the Nordic region.

The event will mark Heat Action Day by highlighting best practices and scalable initiatives that can be replicated by local and regional governments around the world. Together, we can #BeatTheHeat. 

Date: 2 June 2026
Time: 15:00 – 16:00 CEST
Location: Villa Rigot & online