Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 22°F | 35°F | 28°F | 4.7" |
February | 20°F | 34°F | 26°F | 2.5" |
March | 33°F | 54°F | 42°F | 4.9" |
April | 42°F | 65°F | 52°F | 4.6" |
May | 53°F | 77°F | 65°F | 3.7" |
June | 64°F | 86°F | 74°F | 4.4" |
July | 65°F | 86°F | 75°F | 4.9" |
August | 66°F | 88°F | 76°F | 3.8" |
September | 59°F | 85°F | 70°F | 4.4" |
October | 48°F | 70°F | 57°F | 5.3" |
November | 34°F | 53°F | 42°F | 5.3" |
December | 20°F | 33°F | 26°F | 2.9" |
Index | De Witt | Illinois | National |
Air quality index | 44 | 41 | 42 |
Pollution index | 703,218 | 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 | 0.020% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Mansfield, IL | 1,006 | 42 | 16.0% |
Bellflower, IL | 430 | 42 | 16.0% |
De Land, IL | 468 | 42 | 16.0% |
Monticello, IL | 5,815 | 42 | 16.0% |
Farmer City, IL | 2,063 | 42 | 16.0% |
De Witt, IL | 221 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Newbern, AL | 221 | 35 | 30.0% |
Widener, AR | 221 | 45 | 10.0% |
Jeddito, AZ | 221 | 17 | 66.0% |
Conroy, IA | 221 | 39 | 22.0% |
Moorhead, IA | 221 | 40 | 20.0% |
De Witt, IL | 221 | 44 | 12.0% |