| 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 | Richboro | Pennsylvania | National |
| Air quality index | 41 | 45 | 42 |
| Pollution index | 8,206,310 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 280 |
| Days with moderate air quality | 83 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| 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. |
| Stockton, NJ | 472 | 41 | 18.0% |
| Burlington, NJ | 9,845 | 41 | 18.0% |
| Bristol, PA | 9,577 | 41 | 18.0% |
| Levittown, PA | 49,921 | 41 | 18.0% |
| Lawrenceville, NJ | 3,515 | 41 | 18.0% |
| Richboro, PA | 8,480 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Harrodsburg, KY | 8,480 | 42 | 16.0% |
| Clinton, NC | 8,480 | 40 | 20.0% |
| Edson, AB | 8,481 | n/a | |
| Glastonbury Center, CT | 8,483 | 41 | 18.0% |
| Harrison, TN | 8,485 | 46 | 8.0% |
| Richboro, PA | 8,480 | 41 | 18.0% |
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