Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 35°F | 26°F | 2.3" |
February | 19°F | 36°F | 27°F | 1.8" |
March | 32°F | 52°F | 41°F | 3.1" |
April | 42°F | 65°F | 53°F | 4.7" |
May | 53°F | 75°F | 63°F | 5.5" |
June | 63°F | 83°F | 73°F | 4.4" |
July | 65°F | 85°F | 75°F | 4.7" |
August | 63°F | 84°F | 73°F | 4.4" |
September | 56°F | 79°F | 66°F | 4.9" |
October | 45°F | 66°F | 54°F | 4.7" |
November | 33°F | 52°F | 42°F | 3.2" |
December | 23°F | 38°F | 30°F | 3.1" |
Index | Congerville | Illinois | National |
Air quality index | 44 | 41 | 42 |
Pollution index | 607,262 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 364 |
Days with good air quality | 256 |
Days with moderate air quality | 108 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Roanoke, IL | 1,880 | 41 | 18.0% |
Deer Creek, IL | 641 | 41 | 18.0% |
Germantown Hills, IL | 3,421 | 41 | 18.0% |
Eureka, IL | 5,485 | 41 | 18.0% |
Tremont, IL | 2,261 | 41 | 18.0% |
Congerville, IL | 840 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Cedar Key, FL | 840 | 30 | 40.0% |
Pendergrass, GA | 840 | 37 | 26.0% |
Garrett Park, MD | 840 | 47 | 6.0% |
Inverness, MS | 840 | 43 | 14.0% |
Attica, OH | 840 | 41 | 18.0% |
Congerville, IL | 840 | 44 | 12.0% |