| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 39°F | 29°F | 2.9" |
| February | 20°F | 40°F | 30°F | 2.5" |
| March | 30°F | 53°F | 40°F | 3.3" |
| April | 40°F | 66°F | 53°F | 3.2" |
| May | 49°F | 75°F | 62°F | 4.1" |
| June | 59°F | 82°F | 70°F | 4.3" |
| July | 62°F | 85°F | 73°F | 4.5" |
| August | 61°F | 84°F | 72°F | 3.5" |
| September | 54°F | 78°F | 66°F | 3.0" |
| October | 44°F | 66°F | 54°F | 3.6" |
| November | 33°F | 55°F | 43°F | 2.6" |
| December | 26°F | 43°F | 34°F | 3.6" |
| Index | Imperial | Pennsylvania | National |
| Air quality index | 56 | 45 | 42 |
| Pollution index | 1,675,060 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 129 |
| Days with moderate air quality | 220 |
| Days w/ poor A.Q. for sensitive groups | 12 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Shippingport, PA | 199 | 6 | 88.0% |
| Conway, PA | 2,150 | 6 | 88.0% |
| Glasgow, PA | 115 | 6 | 88.0% |
| Hookstown, PA | 127 | 6 | 88.0% |
| Baden, PA | 3,911 | 6 | 88.0% |
| Imperial, PA | 2,569 | 56 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Lake View, AL | 2,569 | 35 | 30.0% |
| Dade City North, FL | 2,569 | 36 | 28.0% |
| Horseheads North, NY | 2,569 | 35 | 30.0% |
| Cochrane, Unorganized, North Part, ON | 2,569 | n/a | |
| Anmore, BC | 2,569 | n/a | |
| Imperial, PA | 2,569 | 56 | 12.0% |
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