| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 43°F | 34°F | 3.7" |
| February | 26°F | 45°F | 35°F | 2.7" |
| March | 34°F | 54°F | 43°F | 3.7" |
| April | 44°F | 67°F | 55°F | 4.3" |
| May | 53°F | 76°F | 64°F | 4.2" |
| June | 63°F | 84°F | 74°F | 4.7" |
| July | 69°F | 89°F | 79°F | 5.0" |
| August | 67°F | 86°F | 76°F | 4.9" |
| September | 60°F | 81°F | 70°F | 4.1" |
| October | 49°F | 69°F | 58°F | 4.9" |
| November | 38°F | 58°F | 48°F | 3.0" |
| December | 32°F | 48°F | 39°F | 4.8" |
| Index | Eddington | Pennsylvania | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 8,206,310 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 180 |
| Days with moderate air quality | 169 |
| Days w/ poor A.Q. for sensitive groups | 16 |
| 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. |
| Yardville, NJ | 6,208 | 41 | 18.0% |
| Morrisville CDP, PA | 862 | 41 | 18.0% |
| Richboro, PA | 8,480 | 41 | 18.0% |
| Woodbourne, PA | 3,301 | 41 | 18.0% |
| Bordentown, NJ | 3,808 | 41 | 18.0% |
| Eddington, PA | 1,803 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Rowley, MA | 1,803 | 43 | 14.0% |
| Lakemont, PA | 1,803 | 41 | 18.0% |
| Moodus, CT | 1,802 | 37 | 26.0% |
| Waimea CDP (Kauai County), HI | 1,804 | 16 | 68.0% |
| Remsen, IA | 1,802 | 35 | 30.0% |
| Eddington, PA | 1,803 | 51 | 2.0% |
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