TODAY DEC23
TEMPERATURE8
HUMIDITY63
PRESSURE103420
WIND COND.320 7.6
  • 2717Mon30%
  • 3315Tue60%
  • 3119
  • 3419Thu
  • 3721Fri
daynightWeather update from Fitchburg, Fitchburg Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Ayer for July is 74.1 degrees
  • The lowest monthly average temperature in Ayer for January is 27.1 degrees
  • The most monthly precipitation in Ayer occurs in October with 5.8 inches
  • The air quality index in Ayer is 5% better than the national average
  • The pollution index in Ayer is 177% worse than the national average

Compare Ayer, MA Weather

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      Ayer 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
      January18°F37°F27°F2.8"
      February18°F39°F28°F3.3"
      March26°F47°F36°F4.0"
      April38°F62°F49°F3.9"
      May48°F72°F59°F4.0"
      June57°F80°F68°F5.0"
      July63°F86°F74°F4.0"
      August61°F83°F72°F3.6"
      September54°F77°F65°F3.7"
      October43°F65°F53°F5.8"
      November32°F53°F42°F3.2"
      December23°F42°F32°F4.0"

      Ayer 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.
      IndexAyerMassachusettsNational
      Air quality index404042
      Pollution index7,556,3208,399,6102,726,193

      Ayer air quality

      MeasurementTotal
      Days measured365
      Days with good air quality312
      Days with moderate air quality52
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.010%
      Mercury0.040%

      Average monthly Ayer temperature with heat index

      Ayer monthly precipitation with daily maximum

      Ayer monthly snow depth with daily maximum

      Ayer monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      East Pepperell, MA1,9163726.0%
      Townsend, MA1,2763726.0%
      Lowell, MA111,3113726.0%
      Groton, MA1,1273726.0%
      Pepperell, MA2,6853726.0%
      Ayer, MA2,5514020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Sussex, NB2,551n/a 
      Alturas, CA2,5502942.0%
      Bayfield, CO2,5504412.0%
      Sabetha, KS2,5504314.0%
      Nicoma Park, OK2,550484.0%
      Ayer, MA2,5514020.0%
      Source: The Ayer, MA 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.