| 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 | Riverton | New Jersey | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 12,485,100 | 7,246,891 | 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 | 0.020% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.100% |
| Lead | 0.120% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Roebling, NJ | 4,120 | 41 | 18.0% |
| Langhorne Manor, PA | 1,491 | 41 | 18.0% |
| Fairless Hills, PA | 8,427 | 41 | 18.0% |
| Morrisville, PA | 8,540 | 41 | 18.0% |
| Richboro, PA | 8,480 | 41 | 18.0% |
| Riverton, NJ | 2,691 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Ajo, AZ | 2,691 | 74 | 48.0% |
| Hudson, CO | 2,691 | 45 | 10.0% |
| Dry Ridge, OH | 2,691 | 54 | 8.0% |
| Solon, IA | 2,690 | 35 | 30.0% |
| Fairmont, IL | 2,690 | 55 | 10.0% |
| Riverton, NJ | 2,691 | 51 | 2.0% |
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