Union City, CA Weather - Forecast & Monthly Averages

TEMPERATURE	58
HUMIDITY	65
PRESSURE	101860
WIND COND.	160 18.4

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Weather Quick Facts

The highest monthly average temperature in Union City for August is 64.4 degrees
The lowest monthly average temperature in Union City for December is 49.2 degrees
The most monthly precipitation in Union City occurs in January with 3.5 inches
The air quality index in Union City is 2% worse than the national average
The pollution index in Union City is 136% worse than the national average

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Union City Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	42°F	58°F	50°F	3.5"
February	46°F	61°F	53°F	3.3"
March	46°F	64°F	54°F	2.6"
April	48°F	66°F	56°F	1.8"
May	52°F	69°F	59°F	0.6"
June	56°F	73°F	62°F	0.1"
July	57°F	75°F	64°F	0.0"
August	58°F	76°F	64°F	0.0"
September	57°F	76°F	64°F	0.2"
October	53°F	72°F	61°F	1.4"
November	48°F	66°F	56°F	1.3"
December	42°F	58°F	49°F	3.2"

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Union City air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Union City	California	National
Air quality index	43	55	42
Pollution index	6,427,290	10,473,190	2,726,193

Union City air quality

Measurement	Total
Days measured	365
Days with good air quality	263
Days with moderate air quality	98
Days w/ poor A.Q. for sensitive groups	4
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.110%
Carbon Tetrachloride	0.010%
Lead	0.010%
Mercury	0.003%

Average monthly Union City temperature with heat index

Union City monthly precipitation with daily maximum

Union City monthly snow depth with daily maximum

Union City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Blackhawk, CA	10,590	40	20.0%
Danville, CA	44,933	40	20.0%
Camino Tassajara, CA	5,870	40	20.0%
San Leandro, CA	90,489	40	20.0%
Castro Valley, CA	64,392	40	20.0%
Union City, CA	75,067	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Arlington Heights, IL	75,071	55	10.0%
Missoula, MT	74,994	40	20.0%
Milpitas, CA	75,182	43	14.0%
Missouri City, TX	75,348	52	4.0%
St. Joseph, MO	75,369	43	14.0%
Union City, CA	75,067	43	14.0%

Source: The Union City, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.