National Weather Service United States Department of Commerce

Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

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Last Map Update: Wed, Aug 6, 2025 at 12:10:35 am PDT

A warming trend is anticipated starting today through the upcoming weekend. High temperatures are forecast to climb into the mid to upper 90s across interior portions of the Bay Area (East Bay and southern Santa Clara Valley). This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries.
A warming trend is anticipated through the weekend with many interior regions potentially seeing in excess of 90 degree high temperatures on Friday and Saturday. Far interior sections may see high temperatures as great as 101 degrees. This will translate to pockets of Moderate HeatRisk, across the interior North Bay, interior East Bay Hills, and Santa Clara Valley (including San Jose). Moderate HeatRisk means that most individuals (especially if you work outside) will be impacted by heat, especially if you don’t have adequate cooling and/or adequate hydration.

 

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