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

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

73°F

23°C

Humidity 63%
Wind Speed E 3 MPH
Barometer NA
Dewpoint 60°F (16°C)
Visibility NA
Last update 04 Aug 10:10 AM PDT
Extended Forecast for

2 Miles SE Portola Valley CA

  • Today

    Today: Sunny, with a high near 92. Light and variable wind.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 92. Light and variable wind.
Tonight
Clear, with a low around 58. Calm wind.
Wednesday
Sunny, with a high near 88. Light and variable wind.
Wednesday Night
Clear, with a low around 58. Light and variable wind.
Thursday
Sunny, with a high near 86. Light and variable wind.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 90.
Friday Night
Clear, with a low around 62.
Saturday
Sunny, with a high near 90.
Saturday Night
Clear, with a low around 62.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 57.
Monday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Portola Valley CA
 37.35°N 122.19°W (Elev. 1220 ft)
9:17 am PDT Aug 4, 2026
11am PDT Aug 4, 2026-6pm PDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database