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 | 50 |
Pollution index | 703,218 | 3,347,295 | 5,066,862 |
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, State | Population | Air Quality Index | National Avg. |
Mansfield, IL | 848 | 42 | 16% |
Bellflower, IL | 416 | 42 | 16% |
De Land, IL | 461 | 42 | 16% |
Monticello, IL | 5,609 | 42 | 16% |
Farmer City, IL | 2,077 | 42 | 16% |
De Witt, IL | 221 | 44 | 12% |
City, State | Population | Air Quality Index | National Avg. |
Hagarville, AR | 221 | 36 | 28% |
Fayetteville, TX | 221 | 44 | 12% |
Woodson, TX | 221 | 26 | 48% |
Clare, IA | 221 | 37 | 26% |
Brainards, NJ | 221 | 34 | 32% |
De Witt, IL | 221 | 44 | 12% |