Union City, CA Weather Forecast
Alameda County, California
Live radar, warnings and storm tracking for Union City, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Union City
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Union City, CA at a glance
Union City is home to about 65,414 people in Alameda County, across 19 square miles. It ranks 136th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Hayward, 5 miles away.
- County
- Alameda County
- Population
- 65,414 2023 est.
- Land area
- 19 sq mi
- People per sq mi
- 3,372
- Forecast point
- 37.6028°N, 122.0188°W
How well can the network see Union City?
The nearest Doppler radar is KMUX (San Francisco, CA), to the SSE. Its lowest scan passes about 2,000 ft above Union City. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Union City show up clearly. Union City is closer to its radar than 68% of US cities.
The closest weather station is KHWD (Hayward Exec). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Union City
- Hayward, CA5 mi
- Newark, CA7 mi
- Fremont, CA9 mi
- Pleasanton, CA9 mi
- Dublin, CA10 mi
- San Leandro, CA11 mi
- Menlo Park, CA11 mi
- East Palo Alto, CA11 mi
Elsewhere in California
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