| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 44°F | 35°F | 2.5" |
| February | 29°F | 46°F | 37°F | 1.6" |
| March | 40°F | 59°F | 49°F | 4.1" |
| April | 50°F | 70°F | 59°F | 10.7" |
| May | 58°F | 78°F | 68°F | 10.5" |
| June | 67°F | 87°F | 77°F | 13.3" |
| July | 70°F | 88°F | 79°F | 0.5" |
| August | 68°F | 88°F | 77°F | 0.4" |
| September | 61°F | 81°F | 70°F | 1.2" |
| October | 50°F | 70°F | 59°F | 0.8" |
| November | 39°F | 58°F | 48°F | 5.8" |
| December | 32°F | 47°F | 39°F | 1.2" |
| Index | Crainville | Illinois | National |
| Air quality index | 43 | 41 | 42 |
| Pollution index | 125,359 | 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 | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Christopher, IL | 2,601 | 43 | 14.0% |
| Orient, IL | 434 | 43 | 14.0% |
| Cambria, IL | 1,071 | 43 | 14.0% |
| Energy, IL | 1,208 | 43 | 14.0% |
| Whiteash, IL | 83 | 43 | 14.0% |
| Crainville, IL | 1,372 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| DeLand Southwest, FL | 1,372 | 37 | 26.0% |
| Minerva Park, OH | 1,372 | 46 | 8.0% |
| Nellysford, VA | 1,372 | 40 | 20.0% |
| Listuguj, QC | 1,372 | n/a | |
| Big Pine, CA | 1,373 | 47 | 6.0% |
| Crainville, IL | 1,372 | 43 | 14.0% |
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