Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Clear

86°F

30°C

Humidity 40%
Wind Speed NE 8 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 18 Mar 02:35 PM PDT
Extended Forecast for

5 Miles E Union City CA

Heat Advisory March 18, 02:57pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 02:57pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 67. Northwest wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 67 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 89. North northeast wind 3 to 8 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 65. North northwest wind around 6 mph becoming light and variable  in the evening.

    Low: 65 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90. Light and variable wind becoming north northwest 5 to 7 mph in the morning.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 88. West northwest wind around 7 mph.
Tonight
Clear, with a low around 67. Northwest wind 5 to 7 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 89. North northeast wind 3 to 8 mph.
Thursday Night
Clear, with a low around 65. North northwest wind around 6 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 90. Light and variable wind becoming north northwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 52.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Union City CA
 37.6°N 121.93°W (Elev. 161 ft)
2:07 pm PDT Mar 18, 2026
2pm PDT Mar 18, 2026-6pm PDT Mar 24, 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