| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 40°F | 32°F | 2.8" |
| February | 26°F | 42°F | 34°F | 3.1" |
| March | 34°F | 53°F | 43°F | 5.7" |
| April | 44°F | 64°F | 54°F | 6.3" |
| May | 52°F | 72°F | 62°F | 4.9" |
| June | 63°F | 81°F | 72°F | 6.5" |
| July | 67°F | 85°F | 77°F | 5.8" |
| August | 66°F | 84°F | 75°F | 4.1" |
| September | 59°F | 78°F | 69°F | 3.2" |
| October | 48°F | 65°F | 57°F | 6.4" |
| November | 40°F | 55°F | 48°F | 2.5" |
| December | 29°F | 42°F | 35°F | 3.6" |
| Index | Churchville | Pennsylvania | National |
| Air quality index | 40 | 45 | 50 |
| Pollution index | 8,206,310 | 4,327,992 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 257 |
| Days with moderate air quality | 106 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.260% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.160% |
| Mercury | 1.120% |
| City, State | Population | Air Quality Index | National Avg. |
| Fieldsboro, NJ | 629 | 40 | 20% |
| Lawrenceville, NJ | 4,116 | 40 | 20% |
| Roebling, NJ | 3,652 | 40 | 20% |
| Doylestown, PA | 8,305 | 40 | 20% |
| Morrisville, PA | 8,611 | 40 | 20% |
| Churchville, PA | 4,012 | 40 | 20% |
| City, State | Population | Air Quality Index | National Avg. |
| Rosewood Heights, IL | 4,011 | 60 | 20% |
| San Joaquin, CA | 4,011 | 80 | 60% |
| Sandy Oaks, TX | 4,013 | 45 | 10% |
| Cedarville, OH | 4,011 | 42 | 16% |
| Ball, LA | 4,014 | 435 | 770% |
| Churchville, PA | 4,012 | 40 | 20% |