| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 42°F | 33°F | 3.3" |
| February | 25°F | 43°F | 34°F | 2.4" |
| March | 33°F | 53°F | 42°F | 3.4" |
| April | 43°F | 66°F | 54°F | 3.8" |
| May | 52°F | 75°F | 63°F | 3.9" |
| June | 62°F | 83°F | 72°F | 5.3" |
| July | 67°F | 88°F | 77°F | 5.1" |
| August | 65°F | 85°F | 75°F | 4.7" |
| September | 59°F | 79°F | 68°F | 3.5" |
| October | 48°F | 68°F | 57°F | 4.2" |
| November | 37°F | 57°F | 46°F | 2.9" |
| December | 31°F | 47°F | 38°F | 4.3" |
| Index | White Horse | New Jersey | National |
| Air quality index | 41 | 45 | 42 |
| Pollution index | 3,313,920 | 7,246,891 | 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 | 0.350% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.350% |
| Mercury | 0.340% |
| City | Population | Air Quality Index | National Avg. |
| Croydon, PA | 9,693 | 41 | 18.0% |
| Penndel, PA | 2,928 | 41 | 18.0% |
| Clearbrook Park, NJ | 3,114 | 41 | 18.0% |
| Hightstown, NJ | 5,334 | 41 | 18.0% |
| Plainsboro Center, NJ | 2,715 | 41 | 18.0% |
| White Horse, NJ | 9,557 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Washington, NC | 9,555 | 0 | 100.0% |
| Cheat Lake, WV | 9,559 | 36 | 28.0% |
| West Athens, CA | 9,554 | 72 | 44.0% |
| Rye Brook, NY | 9,554 | 43 | 14.0% |
| Fairmount, CO | 9,549 | 58 | 16.0% |
| White Horse, NJ | 9,557 | 41 | 18.0% |
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