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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 19°F | 34°F | 26°F | 2.6" | 
| February | 19°F | 34°F | 26°F | 2.1" | 
| March | 28°F | 46°F | 36°F | 2.9" | 
| April | 39°F | 60°F | 48°F | 3.3" | 
| May | 48°F | 68°F | 57°F | 4.5" | 
| June | 57°F | 75°F | 66°F | 5.2" | 
| July | 61°F | 79°F | 69°F | 4.5" | 
| August | 59°F | 77°F | 68°F | 4.4" | 
| September | 53°F | 71°F | 62°F | 4.1" | 
| October | 43°F | 60°F | 51°F | 3.9" | 
| November | 32°F | 49°F | 40°F | 2.6" | 
| December | 24°F | 38°F | 31°F | 3.4" | 
| Index | Cumberland | Maryland | National | 
| Air quality index | 36 | 43 | 42 | 
| Pollution index | 314,680 | 5,342,367 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 359 | 
| Days with good air quality | 340 | 
| Days with moderate air quality | 19 | 
| Days w/ poor A.Q. for sensitive groups | 0 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.000% | 
| Benzene | 0.004% | 
| Carbon Tetrachloride | 0.001% | 
| Lead | 0.000% | 
| Mercury | 0.000% | 
| City | Population | Air Quality Index | National Avg. | 
| Dawson, MD | 52 | 36 | 28.0% | 
| Keyser, WV | 4,956 | 36 | 28.0% | 
| Gilmore, MD | 308 | 36 | 28.0% | 
| Moscow, MD | 325 | 36 | 28.0% | 
| Rawlings, MD | 370 | 36 | 28.0% | 
| Cumberland, MD | 19,495 | 36 | 28.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Salmon Arm, BC | 19,494 | n/a | |
| Lake Forest, IL | 19,497 | 55 | 10.0% | 
| Salmon Creek, WA | 19,506 | 38 | 24.0% | 
| Franconia, VA | 19,478 | 47 | 6.0% | 
| Montgomery, IL | 19,515 | 0 | 100.0% | 
| Cumberland, MD | 19,495 | 36 | 28.0% |