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WeatherLive › California › Union City

Union City, CA Weather (94587)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherUnion City · 3:12 AM PDT
21° | 11°
15°C
Feels like 12°
Fog
WindSW 14 mph · Gusts 14 mph
Precip57% · 0.03 in
Humidity98% · Dew point 14°
UV index9 Very high
Air Quality51 Moderate
Pressure29.88 inHg
Visibility6 mi
Sunrise / Sunset6:25 AM · 7:58 PM · 13h 33m

Weather map — Union City

Full radar →
Now
15°
34%
14 mph
04:00
14°
35%
15 mph
05:00
14°
35%
15 mph
06:00
14°
35%
14 mph
07:00
14°
34%
14 mph
08:00
14°
33%
15 mph
09:00
15°
32%
15 mph
10:00
16°
29%
15 mph
11:00
18°
25%
14 mph
12:00
21°
16%
14 mph
13:00
11°
17%
15 mph
14:00
11°
17%
14 mph
15:00
11°
14%
15 mph
16:00
11°
23%
14 mph
17:00
11°
19%
13 mph
18:00
11°
19%
14 mph
19:00
11°
16%
15 mph
20:00
11°
13%
14 mph
21:00
11°
20%
15 mph
22:00
11°
13%
15 mph
23:00
11°
17%
14 mph
00:00
11°
17%
13 mph
01:00
11°
17%
13 mph
02:00
11°
7%
11 mph

Today · Mon 8/17

High 21°
57% / 0.03 in

Showers. Winds SW at 15 mph.

Overnight · Mon 8/17

Low 14°
— / –

Showers.

Tomorrow · Tue 8/18

11° | 11°
39% / 0.03 in

Showers. Winds S at 16 mph.

7-day trend

Union City · temperature + precipitation

10-day forecast

Updated 3:12 AM

Details & indices

Wind
14 mph SW
Gusts 14 mph
Humidity
98%
Dew point 14°
Pressure
29.88 inHg
Falling
UV index
9 — Very high
High today
Air Quality
Moderate
AQI 51 · US EPA
Allergy
High
Mugwort
Visibility
6 mi
Clear view
Allergy — Union City

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
Low

Sun & moon

Sunrise6:25 AM
Sunset7:58 PM
Length of day13h 33m
Moonrise11:51 AM
Moonset10:25 PM
Moon phase🌒 Waxing Crescent · 25%
Next full moonAug 27 Sturgeon Moon
Latitude37.5958°N
Longitude-122.0191°E

Water temps nearby

View all →
Stinson Beach (40 mi)60°
Santa Cruz Main Beach (43 mi)62°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Poor
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Los Angeles
Sunny
19°
San Diego
Partly cloudy
21° 🌤️
San Jose
—
— 🌤️
San Francisco
—
—
Fresno
Mostly cloudy
23° 🌤️
Sacramento
—
—
Data sources · Monday, August 17
Where the Union City forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 37.5958°N, -122.0191°.
NBM + global weather models
Updated: 3:12 AM
Weather in Union City
Over the next 10 days Union City tops out around 21° (Monday) and dips to 10° on the coolest night (Wednesday). Roughly 2.6 in of rain falls over the period, with Thursday the most likely wet day (88%). Hold onto the patio furniture Friday: gusts could hit 61 mph. No active NWS alerts at the moment — quiet on the hazards front. Right now Union City is running about 47° warmer than Santa Rosa. Longer view: Mediterranean pattern — nearly all rain lands November through March.
Union City, CA · Elev 69 ft · 37.60°N, 122.02°W · California · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 3:12 AM