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Chatham 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
January20°F38°F29°F2.1"
February22°F41°F31°F1.9"
March34°F56°F44°F2.9"
April44°F68°F56°F4.3"
May54°F77°F65°F4.5"
June64°F86°F74°F5.5"
July66°F88°F77°F4.3"
August64°F86°F75°F3.2"
September57°F81°F68°F3.7"
October46°F69°F56°F3.7"
November36°F55°F45°F2.5"
December26°F41°F33°F2.8"

Did you know?

  • The highest monthly average temperature in Chatham for July is 77 degrees.
  • The lowest monthly average temperature in Chatham for January is 29 degrees.
  • The most monthly precipitation in Chatham occurs in June with 5.5 inches.
  • The air quality index in Chatham is 29% better than the national average.
  • The pollution index in Chatham is 1% worse than the national average.

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Chatham 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.
IndexChathamIllinoisNational
Air quality index354150
Pollution index5,136,0803,347,2955,066,862

Chatham air quality information

MeasurementTotal
Days measured365
Days with good air quality316
Days with moderate air quality49
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Chatham air quality information

PollutantTotal
Arsenic0.010%
Benzene0.090%
Carbon Tetrachloride0.010%
Lead0.390%
Mercury0.020%

Average monthly Chatham temperature with heat index

Chatham monthly precipitation with daily maximum

Chatham monthly snow depth with daily maximum

Chatham monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Berlin, IL1833530%
Dawson, IL5443530%
Leland Grove, IL1,6253530%
Pawnee, IL2,7383530%
Southern View, IL2,0363530%
Chatham, IL12,5693530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
New Kingman-Butler, AZ12,5661864%
Green River, WY12,5744216%
North Palm Beach, FL12,5812942%
Bensville, MD12,584492%
Cambridge, MD12,5523726%
Chatham, IL12,5693530%
Source: The Chatham, IL 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.