Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 43°F | 34°F | 9.8" |
February | 26°F | 45°F | 34°F | 4.7" |
March | 38°F | 60°F | 48°F | 2.9" |
April | 45°F | 68°F | 56°F | 5.6" |
May | 56°F | 79°F | 67°F | 3.7" |
June | 65°F | 88°F | 76°F | 7.6" |
July | 67°F | 88°F | 77°F | 12.3" |
August | 70°F | 93°F | 80°F | 7.2" |
September | 61°F | 85°F | 72°F | 16.1" |
October | 49°F | 72°F | 59°F | 7.5" |
November | 38°F | 59°F | 47°F | 11.9" |
December | 27°F | 42°F | 33°F | 2.9" |
Index | Summerfield | Illinois | National |
Air quality index | 54 | 41 | 42 |
Pollution index | 6,055,640 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 134 |
Days with moderate air quality | 221 |
Days w/ poor A.Q. for sensitive groups | 8 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.070% |
Carbon Tetrachloride | 0.040% |
Lead | 0.100% |
Mercury | 0.230% |
City | Population | Air Quality Index | National Avg. |
Breese, IL | 4,160 | 43 | 14.0% |
Addieville, IL | 386 | 43 | 14.0% |
Okawville, IL | 1,469 | 43 | 14.0% |
Germantown, IL | 1,279 | 43 | 14.0% |
Marine, IL | 994 | 54 | 8.0% |
Summerfield, IL | 324 | 54 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Shaktoolik, AK | 324 | 38 | 24.0% |
Etowah, AR | 324 | 45 | 10.0% |
Grangeville, CA | 324 | 56 | 12.0% |
Las Flores CDP (Tehama County), CA | 324 | 89 | 78.0% |
Stonefort, IL | 324 | 44 | 12.0% |
Summerfield, IL | 324 | 54 | 8.0% |