Dale City, VA Weather - Forecast & Monthly Averages

TEMPERATURE	74
HUMIDITY	66
PRESSURE	101830
WIND COND.	30 9.4

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Weather Quick Facts

The highest monthly average temperature in Dale City for July is 78.1 degrees
The lowest monthly average temperature in Dale City for January is 35 degrees
The most monthly precipitation in Dale City occurs in September with 11.4 inches
The air quality index in Dale City is 12% worse than the national average
The pollution index in Dale City is 81% better than the national average

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Dale 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	26°F	45°F	35°F	4.6"
February	27°F	48°F	37°F	4.1"
March	36°F	59°F	47°F	5.4"
April	45°F	70°F	57°F	6.6"
May	54°F	77°F	66°F	7.2"
June	63°F	86°F	74°F	10.2"
July	67°F	89°F	78°F	8.7"
August	66°F	87°F	76°F	7.4"
September	59°F	81°F	69°F	11.4"
October	48°F	70°F	58°F	8.8"
November	37°F	59°F	47°F	5.7"
December	31°F	50°F	40°F	5.9"

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Dale 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	Dale City	Virginia	National
Air quality index	47	58	42
Pollution index	520,936	1,561,881	2,726,193

Dale City air quality

Measurement	Total
Days measured	365
Days with good air quality	209
Days with moderate air quality	145
Days w/ poor A.Q. for sensitive groups	10
Days with unhealthy air quality	1

Air quality details

Pollutant	Total
Arsenic	0.020%
Benzene	0.010%
Carbon Tetrachloride	0.002%
Lead	0.050%
Mercury	0.001%

Average monthly Dale City temperature with heat index

Dale City monthly precipitation with daily maximum

Dale City monthly snow depth with daily maximum

Dale City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Manassas, VA	41,038	47	6.0%
Bull Run, VA	16,769	47	6.0%
Yorkshire, VA	9,118	47	6.0%
Fort Hunt, VA	16,383	47	6.0%
Indian Head, MD	3,803	47	6.0%
Dale City, VA	72,062	47	6.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Decatur, IL	71,857	44	12.0%
Frederick, MD	71,843	40	20.0%
Lauderhill, FL	71,827	41	18.0%
Pawtucket, RI	71,821	44	12.0%
Pittsburg, CA	71,723	40	20.0%
Dale City, VA	72,062	47	6.0%

Source: The Dale City, VA 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.