Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 24°F | 38°F | 31°F | 6.8" |
February | 23°F | 37°F | 29°F | 3.4" |
March | 35°F | 56°F | 45°F | 3.0" |
April | 43°F | 65°F | 54°F | 4.2" |
May | 54°F | 78°F | 66°F | 3.1" |
June | 64°F | 86°F | 75°F | 8.1" |
July | 65°F | 86°F | 76°F | 4.0" |
August | 68°F | 89°F | 78°F | 3.9" |
September | 59°F | 85°F | 72°F | 7.7" |
October | 49°F | 71°F | 60°F | 7.1" |
November | 37°F | 56°F | 45°F | 6.1" |
December | 24°F | 37°F | 30°F | 2.5" |
Index | Illiopolis | Illinois | National |
Air quality index | 44 | 41 | 50 |
Pollution index | 5,136,080 | 3,347,295 | 5,066,862 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 255 |
Days with moderate air quality | 110 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.090% |
Carbon Tetrachloride | 0.010% |
Lead | 0.390% |
Mercury | 0.020% |
City, State | Population | Air Quality Index | National Avg. |
Cornland, IL | 70 | 40 | 20% |
Buffalo, IL | 503 | 40 | 20% |
Edinburg, IL | 1,156 | 40 | 20% |
Dawson, IL | 544 | 40 | 20% |
Elkhart, IL | 407 | 40 | 20% |
Illiopolis, IL | 822 | 44 | 12% |
City, State | Population | Air Quality Index | National Avg. |
Wagener, SC | 822 | 43 | 14% |
Ivy, VA | 822 | 40 | 20% |
West Chazy, NY | 822 | 37 | 26% |
Jefferson, WV | 822 | 40 | 20% |
Rockvale, TN | 822 | 31 | 38% |
Illiopolis, IL | 822 | 44 | 12% |