| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 43°F | 34°F | 3.3" |
| February | 26°F | 43°F | 34°F | 2.5" |
| March | 34°F | 54°F | 43°F | 3.7" |
| April | 44°F | 66°F | 54°F | 4.9" |
| May | 52°F | 74°F | 63°F | 3.2" |
| June | 64°F | 83°F | 73°F | 5.0" |
| July | 68°F | 87°F | 77°F | 5.6" |
| August | 67°F | 86°F | 76°F | 3.7" |
| September | 59°F | 79°F | 69°F | 4.1" |
| October | 48°F | 67°F | 57°F | 6.1" |
| November | 40°F | 57°F | 48°F | 3.3" |
| December | 30°F | 46°F | 38°F | 5.3" |
| Index | Alloway | New Jersey | National |
| Air quality index | 40 | 45 | 42 |
| Pollution index | 2,169,600 | 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 | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Clayton, NJ | 8,688 | 40 | 20.0% |
| Pennsville, NJ | 11,968 | 40 | 20.0% |
| Elmer, NJ | 1,333 | 40 | 20.0% |
| Rosenhayn, NJ | 1,321 | 40 | 20.0% |
| Bridgeton, NJ | 24,264 | 40 | 20.0% |
| Alloway, NJ | 1,474 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Lebec, CA | 1,474 | 67 | 34.0% |
| Ontonagon, MI | 1,474 | 8 | 84.0% |
| Poultney, VT | 1,474 | 36 | 28.0% |
| Armour, ON | 1,474 | n/a | |
| Osler, SK | 1,474 | n/a | |
| Alloway, NJ | 1,474 | 40 | 20.0% |
Here are the best places to live in New Jersey
Top 10 cities in New Jersey with the best education system
10 best cities to buy a new house in New Jersey
10 Best cities in New Jersey for employment