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    • Today

      Sep 30

      66° /53°
      Clouds breaking for sun
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 68°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Sat

      Oct 1

      70° /54°F
      Low clouds, then sun and cool
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 71°
      • UV: 4 - Moderate
      • Air Qual.: Good
    • Sun

      Oct 2

      66° /52°
      A shower in the afternoon
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 66°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Mon

      Oct 3

      67° /51°
      Cool with some sun
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 70°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Tue

      Oct 4

      71° /52°
      Partly sunny and cool
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 73°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More

    Day

    70°Hi RealFeel® 71° Precipitation 0%
    Low clouds giving way to sunshine and cool
    • WNW 10 mph
    • Gusts: 18 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    54°Lo RealFeel® 52° Precipitation 1%
    Mainly clear in the evening; cloudy late
    • WSW 7 mph
    • Gusts: 14 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/1/2015
    High 70° 76° N/A 73°
    Low 54° 54° N/A 61°

    Sunrise/Sunset

    • Sunrise: 7:04 AM
    • Sunset: 6:50 PM
    • Duration: 11:46 hr

    Moonrise/Moonset

    • Moonrise: 7:38 AM
    • Moonset: 7:30 PM
    • Duration: 11:52 hr
    Astronomy

    Union City Weather Report

    Cooler air, showers to aid in wildfire efforts across California this weekend

    September 30, 2016; 9:54 AM ET

    Improving weather over the next several days will aid officials in battling wildfires across California. More >

    Sat. Air Quality

    Sat. Asthma Risk

    Sat. UV Index