TODAY OCT08
TEMPERATURE58
HUMIDITY57
PRESSURE101150
WIND COND.310 11.2
  • 6745Tue
  • 6544Wed
  • 6042Thu
  • 6648Fri
  • 7447Sat
daynightWeather update from Hartford, Hartford-Brainard Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hartford for July is 75.6 degrees
  • The lowest monthly average temperature in Hartford for January is 29.7 degrees
  • The most monthly precipitation in Hartford occurs in October with 5.2 inches
  • The air quality index in Hartford is 3% better than the national average
  • The pollution index in Hartford is 3% worse than the national average

Compare Hartford, CT Weather

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      Hartford 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°F39°F30°F2.9"
      February21°F40°F31°F3.1"
      March29°F49°F39°F3.5"
      April40°F63°F51°F4.2"
      May50°F73°F61°F3.8"
      June60°F81°F70°F5.1"
      July66°F86°F76°F4.5"
      August64°F84°F73°F4.1"
      September57°F78°F67°F3.5"
      October46°F66°F55°F5.2"
      November35°F54°F44°F3.3"
      December27°F43°F35°F4.2"

      Hartford 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.
      IndexHartfordConnecticutNational
      Air quality index414342
      Pollution index2,806,1508,629,8832,726,193

      Hartford air quality

      MeasurementTotal
      Days measured365
      Days with good air quality291
      Days with moderate air quality66
      Days w/ poor A.Q. for sensitive groups7
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.004%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.040%
      Mercury0.010%

      Average monthly Hartford temperature with heat index

      Hartford monthly precipitation with daily maximum

      Hartford monthly snow depth with daily maximum

      Hartford monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Collinsville, CT3,7293726.0%
      New Hartford Center, CT1,2103726.0%
      Bristol, CT60,0393726.0%
      Southwood Acres, CT8,3524020.0%
      Blue Hills, CT2,6004118.0%
      Hartford, CT122,5494118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Odessa, TX122,6302844.0%
      Columbia, MO122,6593824.0%
      Wilmington, NC122,1623432.0%
      Victorville, CA122,9588978.0%
      Berkeley, CA123,0654020.0%
      Hartford, CT122,5494118.0%
      Source: The Hartford, CT 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.