Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 29°F | 46°F | 37°F | 4.5" |
February | 31°F | 49°F | 39°F | 3.7" |
March | 41°F | 61°F | 50°F | 7.8" |
April | 51°F | 72°F | 61°F | 7.9" |
May | 60°F | 80°F | 69°F | 6.9" |
June | 69°F | 90°F | 79°F | 6.4" |
July | 70°F | 90°F | 79°F | 5.7" |
August | 68°F | 89°F | 77°F | 4.3" |
September | 60°F | 83°F | 70°F | 2.8" |
October | 49°F | 73°F | 60°F | 4.4" |
November | 39°F | 60°F | 49°F | 8.5" |
December | 33°F | 49°F | 40°F | 8.2" |
Index | Olmsted | Illinois | National |
Air quality index | 44 | 41 | 42 |
Pollution index | 1,566,340 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 364 |
Days with good air quality | 261 |
Days with moderate air quality | 103 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Mounds, IL | 916 | 44 | 12.0% |
Ullin, IL | 579 | 44 | 12.0% |
Karnak, IL | 473 | 44 | 12.0% |
Barlow, KY | 542 | 44 | 12.0% |
Kevil, KY | 768 | 44 | 12.0% |
Olmsted, IL | 380 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Nances Creek, AL | 380 | 43 | 14.0% |
Midway town, AR | 380 | 36 | 28.0% |
Cane Beds, AZ | 380 | 44 | 12.0% |
El Moro, CO | 380 | 20 | 60.0% |
Good Hope, GA | 380 | 44 | 12.0% |
Olmsted, IL | 380 | 44 | 12.0% |