| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 34°F | 3.1" |
| February | 24°F | 45°F | 35°F | 2.4" |
| March | 32°F | 54°F | 42°F | 3.8" |
| April | 42°F | 66°F | 54°F | 4.2" |
| May | 51°F | 75°F | 62°F | 3.4" |
| June | 61°F | 83°F | 72°F | 5.3" |
| July | 67°F | 88°F | 77°F | 4.3" |
| August | 64°F | 85°F | 75°F | 5.0" |
| September | 58°F | 80°F | 68°F | 3.3" |
| October | 47°F | 69°F | 57°F | 4.6" |
| November | 36°F | 58°F | 46°F | 3.0" |
| December | 29°F | 49°F | 39°F | 4.8" |
| Index | Cedarville | New Jersey | National |
| Air quality index | 40 | 45 | 42 |
| Pollution index | 3,274,370 | 7,246,891 | 2,726,193 |
| Measurement | Total |
| Days measured | 361 |
| Days with good air quality | 297 |
| Days with moderate air quality | 61 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Millville, NJ | 27,485 | 40 | 20.0% |
| Newfield, NJ | 1,502 | 40 | 20.0% |
| Seabrook Farms, NJ | 1,602 | 40 | 20.0% |
| Bridgeton, NJ | 24,264 | 40 | 20.0% |
| Port Norris, NJ | 1,652 | 40 | 20.0% |
| Cedarville, NJ | 930 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Salcha, AK | 930 | 38 | 24.0% |
| Cheyenne Wells, CO | 930 | 20 | 60.0% |
| Lake Roesiger, WA | 930 | 45 | 10.0% |
| La Farge, WI | 930 | 35 | 30.0% |
| Rib Lake, WI | 930 | 34 | 32.0% |
| Cedarville, NJ | 930 | 40 | 20.0% |
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