Weather ❯ Extreme Weather

Heat Waves

Health Risks Temperature Records Heat Warnings Health Impacts Impact on Events Impact on Health Impact on Infrastructure Temperature Effects Public Health Heat Safety

Extreme Heat Warning Covers Imperial Valley as Afternoon Temperatures Reach 106–111°F

The advisory signals a major public-health threat that can cause heat illness and requires local cooling shelters and worker rest measures.

Chicago’s DuSable Lake Shore Drive Bridge Jammed by Heat and Reopened After Multi‑Hour Closure

Heat Wave Prompts Early Dismissals and One-Day Closures in Major U.S. School Districts

JCPS Cancels Outdoor Practices and May Delay Friday Football Over Heat Advisory

Western Heat Dome Keeps Southwest Under Extreme Warnings as Weekend Storm Chance Looms

ASU Hockey Prospect Matthew Mayich Hospitalized After Outdoor Workout Collapse

Wood Fire Rips Through Perris, Forcing Evacuations as Crews Battle Fast-Spreading Brush

ASU Men’s Hockey Player Hospitalized After Collapsing During Outdoor Workout

French Visitor Dies After Becoming Stranded in Death Valley

Two Phoenix Officers Arrested in Alleged Unreported Violent Traffic Stop

Extreme Heat Warning Forces Phoenix Trail Closures as Rescues and Death Investigations Rise

19-Year-Old Killed After Gunfire Erupts at Goodyear House Party

72 Treated for Heat Illness at Colorado Springs Tacos and Tequilas Festival

Fijian Forward Saimoni Vunilagi Dies After Suspected Heatstroke During Training

Denver Opens Citywide Cooling Centers as Heat Nears 100°F

South Korea Reaches 40°C as Government Mobilises Over Record Heat

NWS Extends Extreme Heat Warnings Across Southern California, Arizona and Nevada

20‑Month‑Old Dies After Heat Stroke in Fuerteventura

Phoenix’s Only Hoist Rescue Helicopter Taken Out of Service for Weeks

DOE Authorizes Backup Generators for Southwest Power Pool to Avert Heat-Driven Blackouts