Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 25°F | 44°F | 33°F | 5.3" |
February | 27°F | 47°F | 35°F | 4.6" |
March | 37°F | 59°F | 47°F | 6.2" |
April | 47°F | 69°F | 57°F | 9.5" |
May | 55°F | 76°F | 65°F | 8.4" |
June | 64°F | 86°F | 74°F | 6.1" |
July | 67°F | 88°F | 77°F | 9.0" |
August | 66°F | 87°F | 75°F | 9.8" |
September | 58°F | 80°F | 68°F | 7.6" |
October | 47°F | 69°F | 57°F | 7.0" |
November | 37°F | 57°F | 46°F | 8.3" |
December | 28°F | 45°F | 36°F | 4.6" |
Index | De Soto | Missouri | National |
Air quality index | 54 | 97 | 42 |
Pollution index | 753,473 | 1,630,255 | 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 | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.020% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Valmeyer, IL | 1,208 | 54 | 8.0% |
Cedar Hill, MO | 1,625 | 54 | 8.0% |
Herculaneum, MO | 4,081 | 54 | 8.0% |
Pevely, MO | 5,937 | 54 | 8.0% |
Barnhart, MO | 6,676 | 54 | 8.0% |
De Soto, MO | 6,359 | 54 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Dillon, SC | 6,358 | 30 | 40.0% |
Burnet, TX | 6,357 | 42 | 16.0% |
Beauceville, QC | 6,357 | n/a | |
Johnsburg, IL | 6,354 | 39 | 22.0% |
Ramtown, NJ | 6,354 | 41 | 18.0% |
De Soto, MO | 6,359 | 54 | 8.0% |