| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 34°F | 25°F | 3.1" |
| February | 18°F | 36°F | 27°F | 2.2" |
| March | 28°F | 50°F | 38°F | 2.7" |
| April | 38°F | 64°F | 50°F | 3.6" |
| May | 48°F | 74°F | 61°F | 4.2" |
| June | 58°F | 83°F | 70°F | 4.2" |
| July | 62°F | 85°F | 73°F | 4.5" |
| August | 60°F | 83°F | 72°F | 4.9" |
| September | 53°F | 78°F | 65°F | 4.0" |
| October | 43°F | 65°F | 53°F | 4.5" |
| November | 32°F | 52°F | 41°F | 2.6" |
| December | 22°F | 38°F | 30°F | 2.8" |
| Index | Niles | Michigan | National |
| Air quality index | 39 | 69 | 50 |
| Pollution index | 4,961,970 | 4,018,800 | 5,066,862 |
| Measurement | Total |
| Days measured | 260 |
| Days with good air quality | 232 |
| Days with moderate air quality | 26 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City, State | Population | Air Quality Index | National Avg. |
| Osceola, IN | 2,468 | 37 | 26% |
| Elkhart, IN | 52,378 | 37 | 26% |
| Simonton Lake, IN | 4,573 | 37 | 26% |
| Baroda, MI | 844 | 39 | 22% |
| Cassopolis, MI | 1,726 | 39 | 22% |
| Niles, MI | 11,379 | 39 | 22% |
| City, State | Population | Air Quality Index | National Avg. |
| Lewisburg, TN | 11,376 | 31 | 38% |
| Home Gardens, CA | 11,383 | 89 | 78% |
| Troy, MO | 11,374 | 54 | 8% |
| Clute, TX | 11,370 | 52 | 4% |
| Woodmere, LA | 11,391 | 45 | 10% |
| Niles, MI | 11,379 | 39 | 22% |
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