| 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 | Rossmoor | New Jersey | National |
| Air quality index | 41 | 45 | 42 |
| Pollution index | 3,756,270 | 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 | 0.020% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.100% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Blawenburg, NJ | 99 | 41 | 18.0% |
| Franklin Park, NJ | 12,738 | 41 | 18.0% |
| Kendall Park, NJ | 9,852 | 41 | 18.0% |
| Princeton, NJ | 31,161 | 41 | 18.0% |
| Ten Mile Run, NJ | 1,801 | 41 | 18.0% |
| Rossmoor, NJ | 2,700 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Inwood, WV | 2,700 | 38 | 24.0% |
| Channel Islands Beach, CA | 2,699 | 46 | 8.0% |
| Three Rivers, CA | 2,699 | 66 | 32.0% |
| Clinton, NJ | 2,699 | 34 | 32.0% |
| Dupont, PA | 2,699 | 38 | 24.0% |
| Rossmoor, NJ | 2,700 | 41 | 18.0% |
Here are the best places to live in New Jersey
Most Dangerous States In The US
See the best places to live in Rossmoor
Check out the 10 safest cities in New Jersey