Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

81°F

27°C

Humidity 34%
Wind Speed S 14 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index80°F (27°C)
Last update 04 Aug 12:28 PM PDT
Extended Forecast for

3 Miles ENE Clayton CA

Heat Advisory until August 4, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 4, 10:00pm

    NOW until 10:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 96 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 64. West southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. West wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. West southwest wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 96. West wind 10 to 14 mph, with gusts as high as 23 mph.
Tonight
Clear, with a low around 64. West southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 90. West wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Clear, with a low around 62. West southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 87. West wind 9 to 11 mph, with gusts as high as 21 mph.
Thursday Night
Clear, with a low around 62.
Friday
Sunny, with a high near 93.
Friday Night
Clear, with a low around 65.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 66.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 84.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Clayton CA
 37.95°N 121.88°W (Elev. 1358 ft)
11:26 am PDT Aug 4, 2026
12pm PDT Aug 4, 2026-6pm PDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database