Heatwave health safety guidance

In early July 2026, the U.S. Centers for Disease Control and Prevention (CDC) issued an alert linking extreme heat to medication safety concerns and recommending the use of cooling devices to protect vulnerable populations.

Later that month, medical experts expanded on the CDC warning with detailed heat‑and‑humidity safety guidelines. They emphasized pre‑hydration, continuous water or electrolyte intake, and the use of loose‑fitting, moisture‑wicking clothing. Fans, airflow, shade, and air‑conditioned spaces were advised to aid sweat evaporation and reduce core‑body temperature, especially during peak heat hours.

The experts also outlined practical steps for outdoor exercise: start early, gradually acclimatize, lower intensity for each 5 °F rise above 60 °F, and protect skin with sunscreen. Special attention was directed to children, seniors, and individuals with pre‑existing health conditions. Monitoring for dizziness, nausea, fatigue, or cramps was recommended to catch heat exhaustion or heat stroke early.