Disclaimer: The Centers for Disease Control and Prevention is the official government source of cause of death in the U.S., including weather-related fatalities.
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Learn more about Heat Index here. Learn more about HeatRisk here.
Local Heat Forecast Maps
Local Heat & WBGT Risk Maps
National HeatRisk & Outlook Maps
Local Heat Alert Criteria
Local Historic Heat Waves
Heat Safety Info & More
Recursos térmicos españoles
NOTE: Max Heat Index graphics are only valid April through October.
Click on the images to enlarge them.
Day 1
Max Temp
Max Heat Index
Min Rel Hum
Min Temp
Day 2
Max Temp
Max Heat Index
Min Rel Hum
Min Temp
Day 3
Max Temp
Max Heat Index
Min Rel Hum
Min Temp
Day 4
Max Temp
Max Heat Index
Min Rel Hum
Min Temp
NOTE: The following maps are part of our Graphical Hazardous Weather Outlook and are only available May through September. Click on the images to enlarge them.
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
NOTE: The following maps represent the daily Wet Bulb Globe Temperature (WBGT) Risk. Click on the images to enlarge them.
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
NOTE: Click on the images to enlarge them.
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Heat Advisory
Extreme Heat Watch/Warning
Heat indices of 105-109 degrees for 2+ hours
Heat indices of 110+ degrees for 2+ hours