Boulder, CO Weather - Forecast & Monthly Averages

TEMPERATURE	37
HUMIDITY	93
PRESSURE	102340
WIND COND.	10 22.3

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Weather Quick Facts

The highest monthly average temperature in Boulder for July is 74.7 degrees
The lowest monthly average temperature in Boulder for December is 29.7 degrees
The most monthly precipitation in Boulder occurs in November with 2.6 inches
The air quality index in Boulder is 12% worse than the national average
The pollution index in Boulder is 62% better than the national average

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Boulder 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	18°F	48°F	32°F	1.2"
February	21°F	50°F	34°F	1.5"
March	30°F	62°F	44°F	1.6"
April	36°F	66°F	49°F	0.2"
May	43°F	73°F	57°F	2.4"
June	54°F	89°F	71°F	1.1"
July	59°F	92°F	75°F	2.1"
August	56°F	90°F	72°F	1.1"
September	49°F	82°F	64°F	0.2"
October	38°F	69°F	52°F	2.1"
November	28°F	58°F	41°F	2.6"
December	17°F	46°F	30°F	0.7"

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Boulder 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	Boulder	Colorado	National
Air quality index	47	38	42
Pollution index	1,028,850	2,068,342	2,726,193

Boulder air quality information

Measurement	Total
Days measured	365
Days with good air quality	227
Days with moderate air quality	133
Days w/ poor A.Q. for sensitive groups	5
Days with unhealthy air quality	0

Boulder air quality information

Pollutant	Total
Arsenic	0.001%
Benzene	0.020%
Carbon Tetrachloride	0.001%
Lead	0.240%
Mercury	0.010%

Average monthly Boulder temperature with heat index

Boulder monthly precipitation with daily maximum

Boulder monthly snow depth with daily maximum

Boulder monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Mead, CO	4,978	45	10.0%
Coal Creek town, CO	308	47	6.0%
Eldorado Springs, CO	325	47	6.0%
Bark Ranch, CO	107	47	6.0%
Ward, CO	77	47	6.0%
Boulder, CO	108,777	47	6.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Broken Arrow, OK	108,875	45	10.0%
San Buenaventura (Ventura), CA	108,467	46	8.0%
Inglewood, CA	109,309	72	44.0%
Sandy Springs, GA	108,180	52	4.0%
Hillsboro, OR	108,026	38	24.0%
Boulder, CO	108,777	47	6.0%

Source: The Boulder, CO 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.