| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 41°F | 32°F | 2.9" |
| February | 23°F | 42°F | 32°F | 2.8" |
| March | 32°F | 53°F | 42°F | 3.4" |
| April | 42°F | 66°F | 53°F | 4.0" |
| May | 51°F | 75°F | 63°F | 4.0" |
| June | 61°F | 82°F | 71°F | 4.7" |
| July | 66°F | 87°F | 76°F | 4.9" |
| August | 63°F | 84°F | 73°F | 5.2" |
| September | 56°F | 78°F | 67°F | 4.7" |
| October | 45°F | 67°F | 56°F | 4.5" |
| November | 35°F | 55°F | 45°F | 2.6" |
| December | 29°F | 46°F | 37°F | 4.2" |
| Index | Pottsgrove | Pennsylvania | National |
| Air quality index | 42 | 45 | 42 |
| Pollution index | 8,206,310 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 279 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.260% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.160% |
| Mercury | 1.120% |
| City | Population | Air Quality Index | National Avg. |
| Red Hill, PA | 2,596 | 42 | 16.0% |
| Trumbauersville, PA | 951 | 42 | 16.0% |
| Elverson, PA | 1,369 | 42 | 16.0% |
| Pottstown, PA | 22,633 | 42 | 16.0% |
| South Pottstown, PA | 2,237 | 42 | 16.0% |
| Pottsgrove, PA | 3,245 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Chickamauga, GA | 3,245 | 46 | 8.0% |
| Garnett, KS | 3,245 | 22 | 56.0% |
| Pendleton, SC | 3,245 | 41 | 18.0% |
| Saint-Côme--Linière, QC | 3,244 | n/a | |
| Choccolocco, AL | 3,246 | 38 | 24.0% |
| Pottsgrove, PA | 3,245 | 42 | 16.0% |
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