TODAY SEP20
TEMPERATURE68
HUMIDITY68
PRESSURE29.96
WIND COND.
  • 7651Fri
  • 8453Sat
  • 8653Sun
  • 7548Mon
  • 6545Tue
daynightWeather update from Broomfield / Jeffco at
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Westminster Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January21°F45°F31°F1.8"
February22°F46°F32°F2.0"
March30°F58°F42°F2.1"
April35°F63°F47°F4.0"
May44°F70°F55°F5.2"
June54°F84°F68°F4.6"
July60°F89°F73°F5.7"
August59°F87°F71°F4.5"
September51°F79°F63°F5.7"
October39°F67°F51°F4.1"
November29°F56°F41°F2.2"
December19°F44°F30°F2.9"

Did you know?

  • The highest monthly average temperature in Westminster for July is 73 degrees.
  • The lowest monthly average temperature in Westminster for December is 30 degrees.
  • The most monthly precipitation in Westminster occurs in September with 5.7 inches.
  • The air quality index in Westminster is 8% worse than the national average.
  • The pollution index in Westminster is 99% better than the national average.

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Westminster 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.
IndexWestminsterColoradoNational
Air quality index543850
Pollution index24,0402,034,6195,066,862

Westminster air quality information

MeasurementTotal
Days measured365
Days with good air quality153
Days with moderate air quality189
Days w/ poor A.Q. for sensitive groups23
Days with unhealthy air quality

Westminster air quality information

PollutantTotal
Arsenic0.000%
Benzene0.000%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Westminster temperature with heat index

Westminster monthly precipitation with daily maximum

Westminster monthly snow depth with daily maximum

Westminster monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Boulder, CO105,4204216%
Lafayette, CO27,0534216%
Louisville, CO19,9724216%
Erie, CO20,8014216%
Paragon Estates, CO8924216%
Westminster, CO111,770548%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Clearwater, FL111,7474314%
Elgin, IL111,9196020%
Carlsbad, CA112,0086122%
Rochester, MN111,3963726%
Lehigh Acres, FL112,2793334%
Westminster, CO111,770548%
Source: The Westminster, 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.