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

Alturas (KAAT)

Lat: 41.48362°NLon: 120.5615°WElev: 4383.0ft.

Clear

48°F

9°C

Humidity 49%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 04 Aug 07:00 AM PDT
Extended Forecast for

11 Miles WSW Canby CA

Heat Advisory August 5, 11:00am until August 6, 11:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Patchy smoke before noon. Sunny, with a high near 91. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 91 °F

    Patchy Smoke
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northwest wind 5 to 9 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Light and variable wind becoming southwest 6 to 11 mph in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59. West southwest wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Southwest wind 3 to 8 mph. Winds could gust as high as 24 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Patchy smoke before noon. Sunny, with a high near 91. Light and variable wind becoming west around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 59. Northwest wind 5 to 9 mph.
Wednesday
Sunny, with a high near 91. Light and variable wind becoming southwest 6 to 11 mph in the afternoon.
Wednesday Night
Clear, with a low around 59. West southwest wind 5 to 14 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 92. Southwest wind 3 to 8 mph. Winds could gust as high as 24 mph.
Thursday Night
Clear, with a low around 59.
Friday
Sunny, with a high near 91.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Canby CA
 41.42°N 121.08°W (Elev. 5098 ft)
4:40 am PDT Aug 4, 2026
7am 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