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    • Tonight

      May 21

      54° Lo F
      Turning cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
    • Tue

      May 22

      68° /53°
      Some sun returning; nice
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Wed

      May 23

      68° /52°
      Clouds giving way to sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Thu

      May 24

      68° /52°
      Low clouds, then some sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Fri

      May 25

      68° /52°
      Mostly cloudy, a thunderstorm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More

    Day

    68°Hi RealFeel® 76° Precipitation 5%
    Cloudy this morning; clouds and sun this afternoon
    • Winds from the
    • W 10 mph
    • Gusts: 21 mph
    • Max UV Index: 10 (Extreme)
    • 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® 51° Precipitation 6%
    Partly cloudy this evening; cloudy late
    • Winds from the
    • SW 8 mph
    • Gusts: 18 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

    Union City Pollen Levels May 21

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 5/21/2017
    High 68° 72° N/A 83°
    Low 54° 52° N/A 56°

    Sunrise/Sunset

    • Sunrise: 5:54 AM
    • Sunset: 8:16 PM
    • Duration: 14:22 hr

    Moonrise/Moonset

    • Moonrise: 12:21 PM
    • Moonset: 2:13 AM
    • Duration: 13:52 hr
    Astronomy

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps