TODAY DEC22
TEMPERATURE44
HUMIDITY27
PRESSURE101860
WIND COND.210 16.6
  • 6634Sun
  • 5830Mon
  • 5429Tue
  • 4828
  • 5229Thu
daynightWeather update from Buckley Space Force Base at
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Weather Quick Facts

  • The highest monthly average temperature in Capitol Hill for July is 73.1 degrees
  • The lowest monthly average temperature in Capitol Hill for December is 29.8 degrees
  • The most monthly precipitation in Capitol Hill occurs in September with 5.7 inches
  • The air quality index in Capitol Hill is 38% worse than the national average
  • The pollution index in Capitol Hill is 262% worse than the national average

Compare Denver, CO Weather

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      Capitol Hill 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"

      Capitol Hill 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.
      IndexCapitol HillDenverColorado
      Air quality index585838
      Pollution index9,869,2409,869,2402,068,342

      Capitol Hill air quality

      MeasurementTotal
      Days measured365
      Days with good air quality91
      Days with moderate air quality252
      Days w/ poor A.Q. for sensitive groups20
      Days with unhealthy air quality2

      Air quality details

      PollutantTotal
      Arsenic0.060%
      Benzene0.140%
      Carbon Tetrachloride0.000%
      Lead0.030%
      Mercury0.030%

      Average monthly Capitol Hill temperature with heat index

      Capitol Hill monthly precipitation with daily maximum

      Capitol Hill monthly snow depth with daily maximum

      Capitol Hill monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Superior, CO13,292476.0%
      Broomfield, CO69,444476.0%
      Eldorado Springs, CO325476.0%
      Northglenn, CO39,2015816.0%
      Cherry Hills Village, CO6,6805816.0%
      Denver, CO715,8785816.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Washington, DC701,974476.0%
      Brampton, ON735,754n/a 
      Vancouver, BC694,440n/a 
      Seattle, WA741,2514510.0%
      Boston, MA689,3264314.0%
      Denver, CO715,8785816.0%
      Source: The Capitol Hill, Denver, 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.