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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 24°F | 42°F | 32°F | 3.2" | 
| February | 25°F | 43°F | 33°F | 2.4" | 
| March | 33°F | 55°F | 43°F | 3.9" | 
| April | 43°F | 68°F | 55°F | 4.1" | 
| May | 52°F | 75°F | 63°F | 4.3" | 
| June | 60°F | 82°F | 71°F | 4.8" | 
| July | 64°F | 85°F | 74°F | 6.0" | 
| August | 63°F | 84°F | 73°F | 4.0" | 
| September | 57°F | 79°F | 67°F | 3.2" | 
| October | 46°F | 67°F | 56°F | 3.9" | 
| November | 36°F | 57°F | 46°F | 2.7" | 
| December | 29°F | 46°F | 37°F | 4.1" | 
| Index | Chalkhill | Pennsylvania | National | 
| Air quality index | 36 | 45 | 42 | 
| Pollution index | 6,478,770 | 4,584,805 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 364 | 
| Days with good air quality | 337 | 
| Days with moderate air quality | 27 | 
| Days w/ poor A.Q. for sensitive groups | 0 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.030% | 
| Benzene | 0.020% | 
| Carbon Tetrachloride | 0.010% | 
| Lead | 0.020% | 
| Mercury | 0.210% | 
| City | Population | Air Quality Index | National Avg. | 
| Point Marion, PA | 1,331 | 36 | 28.0% | 
| Ohiopyle, PA | 34 | 36 | 28.0% | 
| Brownsville, PA | 2,313 | 36 | 28.0% | 
| Grindstone, PA | 818 | 36 | 28.0% | 
| Edenborn, PA | 143 | 36 | 28.0% | 
| Chalkhill, PA | 69 | 36 | 28.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Datto, AR | 69 | 26 | 48.0% | 
| Jericho, AR | 69 | 45 | 10.0% | 
| Moskowite Corner, CA | 69 | 35 | 30.0% | 
| Trona, CA | 69 | 15 | 70.0% | 
| Hartman, CO | 69 | 15 | 70.0% | 
| Chalkhill, PA | 69 | 36 | 28.0% |