Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 24°F | 41°F | 31°F | 3.4" |
February | 25°F | 43°F | 33°F | 3.7" |
March | 38°F | 57°F | 46°F | 3.1" |
April | 47°F | 68°F | 56°F | 6.6" |
May | 56°F | 76°F | 65°F | 6.1" |
June | 65°F | 85°F | 75°F | 3.5" |
July | 67°F | 87°F | 77°F | 7.3" |
August | 66°F | 86°F | 75°F | 6.8" |
September | 58°F | 80°F | 68°F | 4.4" |
October | 47°F | 68°F | 57°F | 6.7" |
November | 36°F | 56°F | 45°F | 4.9" |
December | 28°F | 43°F | 35°F | 6.3" |
Index | Godfrey | Illinois | National |
Air quality index | 54 | 41 | 42 |
Pollution index | 8,870,230 | 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 | 0.180% |
Benzene | 0.060% |
Carbon Tetrachloride | 0.020% |
Lead | 0.030% |
Mercury | 0.120% |
City | Population | Air Quality Index | National Avg. |
Royal Lakes, IL | 282 | 54 | 8.0% |
Elsah, IL | 701 | 54 | 8.0% |
Florissant, MO | 51,220 | 54 | 8.0% |
East Alton, IL | 6,021 | 54 | 8.0% |
Mitchell, IL | 1,233 | 54 | 8.0% |
Godfrey, IL | 17,540 | 54 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Marion, IL | 17,539 | 43 | 14.0% |
Lithia Springs, GA | 17,545 | 52 | 4.0% |
Bostonia, CA | 17,532 | 64 | 28.0% |
Wantagh, NY | 17,548 | 51 | 2.0% |
Manassas Park, VA | 17,548 | 47 | 6.0% |
Godfrey, IL | 17,540 | 54 | 8.0% |