Heatwaves in the United States
This site has recorded 472 heatwaves in the United States from official sources.
Recent heatwaves in the United States
- Moderate Heat Advisory issued October 17 at 1:37PM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America
- Moderate Heat Advisory issued October 17 at 11:53AM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 17 at 9:08AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America
- Moderate Heat Advisory issued October 17 at 4:13AM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 16 at 8:41PM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 16 at 7:50PM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America
- Moderate Heat Advisory issued October 16 at 12:54PM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 16 at 11:03AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America
- Moderate Heat Advisory issued October 16 at 5:10AM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 15 at 1:39PM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
- Moderate Heat Advisory issued October 15 at 7:38AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA, United States of America
- Moderate Heat Advisory issued October 15 at 5:33AM PDT until October 17 at 8:00PM PDT by NWS San Diego CA, United States of America
All hazards in the United States →
What to do in a heatwave
The steps below are the same wherever you are — the hazard does not change because the border does. Read the heatwave safety guide →
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- Why Hawaii Gets Hurricane Warnings but Rarely Direct Hits
Sources and update frequency for every figure on this page are listed on data sources, and the collection method on methodology.