Maricopa County’s heat‑death reductions signal model for Europe’s extreme heat

Maricopa County, Arizona, has cut heat‑related deaths from a peak of 645 in 2023 to 405 in 2025 by expanding cooling‑center hours, providing free air‑conditioning access, and offering repairs or replacements for low‑income and homeless residents. As of 11 July 2024 the county recorded 23 heat‑related deaths.

Across the Atlantic, Europe is experiencing more frequent and intense heat waves. In the summer of 2023 France reported over 2,000 excess deaths, England and Wales estimated 2,700 heat‑related fatalities, and the United States logged at least 44 deaths over the 4 July weekend. Record temperatures have risen to 41.7 °C in Germany, nearly 38 °C in the United Kingdom, and 48.8 °C in Sicily. Scientists warn that Europe’s warming rate is about twice the global average and that a combination of persistent high‑pressure ridges, hot air from North Africa, dry soils and foehn winds could push some southern locations to 50 °C.

Experts suggest that the strategies tested in Maricopa County—continuous cooling spaces, subsidised air‑conditioning and targeted assistance for vulnerable groups—could provide a blueprint to reduce heat‑related mortality as Europe confronts increasingly extreme temperatures.