National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Clear

88°F

31°C

Humidity 32%
Wind Speed W 6 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 03 Oct 02:54 PM PDT
Extended Forecast for

Union City CA

Heat Advisory October 3, 03:14pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 3, 03:14pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • Tonight

    Low: 68 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 93. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 93 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. Northwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Tonight
Increasing clouds, with a low around 68. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 93. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 66. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Calm wind becoming west northwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 67. West northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122.02°W (Elev. 184 ft)
Last Update:
1:30 pm PDT Oct 3, 2026
Forecast Valid:
3pm PDT Oct 3, 2026-6pm PDT Oct 10, 2026
 
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Additional Resources

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