Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 30°F | 44°F | 36°F | 7.5" |
February | 28°F | 46°F | 36°F | 4.9" |
March | 38°F | 61°F | 49°F | 4.2" |
April | 45°F | 67°F | 56°F | 5.8" |
May | 55°F | 79°F | 67°F | 4.4" |
June | 65°F | 87°F | 76°F | 5.4" |
July | 66°F | 87°F | 76°F | 3.6" |
August | 69°F | 92°F | 80°F | 3.8" |
September | 60°F | 85°F | 71°F | 5.0" |
October | 48°F | 73°F | 59°F | 5.5" |
November | 38°F | 59°F | 48°F | 11.1" |
December | 28°F | 45°F | 36°F | 6.7" |
Index | Grand Tower | Illinois | National |
Air quality index | 43 | 41 | 42 |
Pollution index | 2,331,220 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 344 |
Days with good air quality | 269 |
Days with moderate air quality | 74 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.004% |
Lead | 0.002% |
Mercury | 0.260% |
City | Population | Air Quality Index | National Avg. |
Rockwood, IL | 25 | 43 | 14.0% |
Frohna, MO | 319 | 43 | 14.0% |
Murphysboro, IL | 7,727 | 43 | 14.0% |
Longtown, MO | 127 | 43 | 14.0% |
Gorham, IL | 263 | 43 | 14.0% |
Grand Tower, IL | 589 | 43 | 14.0% |
City | Population | Air Quality Index | National Avg. |
Schall Circle, FL | 589 | 36 | 28.0% |
Albert City, IA | 589 | 35 | 30.0% |
Camden, IN | 589 | 42 | 16.0% |
River Bluff, KY | 589 | 49 | 2.0% |
Mulliken, MI | 589 | 36 | 28.0% |
Grand Tower, IL | 589 | 43 | 14.0% |