Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 40°F | 31°F | 5.3" |
February | 24°F | 43°F | 33°F | 3.4" |
March | 36°F | 57°F | 45°F | 4.0" |
April | 46°F | 69°F | 56°F | 7.6" |
May | 56°F | 77°F | 66°F | 6.3" |
June | 64°F | 86°F | 75°F | 6.7" |
July | 66°F | 87°F | 76°F | 5.7" |
August | 63°F | 86°F | 74°F | 4.9" |
September | 56°F | 82°F | 67°F | 5.9" |
October | 46°F | 70°F | 57°F | 5.6" |
November | 35°F | 56°F | 44°F | 5.6" |
December | 28°F | 44°F | 35°F | 4.9" |
Index | Flat Rock | Illinois | National |
Air quality index | 36 | 41 | 42 |
Pollution index | 500,004 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 359 |
Days with good air quality | 328 |
Days with moderate air quality | 31 |
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. |
Emison, IN | 78 | 36 | 28.0% |
Stoy, IL | 146 | 36 | 28.0% |
Russellville, IL | 75 | 36 | 28.0% |
Oblong, IL | 1,520 | 36 | 28.0% |
Carlisle, IN | 544 | 36 | 28.0% |
Flat Rock, IL | 464 | 36 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Scammon Bay, AK | 464 | 31 | 38.0% |
Dozier, AL | 464 | 52 | 4.0% |
Allenspark, CO | 464 | 47 | 6.0% |
Saguache, CO | 464 | 16 | 68.0% |
Kenton, DE | 464 | 42 | 16.0% |
Flat Rock, IL | 464 | 36 | 28.0% |