| 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 | New Brighton | Pennsylvania | National |
| Air quality index | 6 | 45 | 42 |
| Pollution index | 1,352,650 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 354 |
| Days with good air quality | 353 |
| Days with moderate air quality | 1 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hookstown, PA | 127 | 6 | 88.0% |
| Calcutta, OH | 4,306 | 6 | 88.0% |
| Bridgewater, PA | 865 | 6 | 88.0% |
| Monaca, PA | 5,466 | 6 | 88.0% |
| Baden, PA | 3,911 | 6 | 88.0% |
| New Brighton, PA | 5,731 | 6 | 88.0% |
| City | Population | Air Quality Index | National Avg. |
| Lewisburg, PA | 5,730 | 35 | 30.0% |
| Nolanville, TX | 5,732 | 42 | 16.0% |
| Estherville, IA | 5,729 | 15 | 70.0% |
| Belding, MI | 5,729 | 38 | 24.0% |
| Edna, TX | 5,729 | 31 | 38.0% |
| New Brighton, PA | 5,731 | 6 | 88.0% |
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