| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 35°F | 28°F | 5.5" |
| February | 19°F | 33°F | 26°F | 1.5" |
| March | 28°F | 46°F | 37°F | 2.3" |
| April | 36°F | 60°F | 47°F | 3.5" |
| May | 46°F | 71°F | 58°F | 4.0" |
| June | 58°F | 81°F | 70°F | 4.1" |
| July | 59°F | 83°F | 71°F | 7.1" |
| August | 59°F | 81°F | 71°F | 13.5" |
| September | 53°F | 78°F | 65°F | 6.2" |
| October | 45°F | 66°F | 56°F | 4.1" |
| November | 33°F | 51°F | 42°F | 3.6" |
| December | 24°F | 34°F | 29°F | 2.4" |
| Index | Bangor | Michigan | National |
| Air quality index | 39 | 69 | 42 |
| Pollution index | 1,797,130 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 241 |
| Days with good air quality | 185 |
| Days with moderate air quality | 51 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lawrence, MI | 918 | 38 | 24.0% |
| Lawton, MI | 1,533 | 38 | 24.0% |
| Decatur, MI | 1,935 | 38 | 24.0% |
| Paw Paw, MI | 3,416 | 38 | 24.0% |
| Gobles, MI | 796 | 39 | 22.0% |
| Bangor, MI | 2,135 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Coventry Lake, CT | 2,135 | 33 | 34.0% |
| Navassa, NC | 2,135 | 34 | 32.0% |
| Carlton, OR | 2,135 | 32 | 36.0% |
| Saint-Gervais, QC | 2,135 | n/a | |
| Red Lodge, MT | 2,134 | 21 | 58.0% |
| Bangor, MI | 2,135 | 39 | 22.0% |
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