| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 33°F | 3.5" |
| February | 27°F | 46°F | 36°F | 1.5" |
| March | 34°F | 56°F | 44°F | 2.7" |
| April | 43°F | 68°F | 55°F | 2.2" |
| May | 54°F | 75°F | 64°F | 3.6" |
| June | 63°F | 84°F | 73°F | 4.3" |
| July | 68°F | 90°F | 79°F | 5.5" |
| August | 66°F | 86°F | 75°F | 8.5" |
| September | 58°F | 80°F | 68°F | 3.6" |
| October | 48°F | 68°F | 57°F | 4.0" |
| November | 37°F | 58°F | 47°F | 1.3" |
| December | 27°F | 45°F | 36°F | 3.1" |
| Index | Roosevelt | 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. |
| East Rocky Hill, NJ | 335 | 41 | 18.0% |
| Monmouth Junction, NJ | 8,911 | 41 | 18.0% |
| Ten Mile Run, NJ | 1,801 | 41 | 18.0% |
| McGuire AFB, NJ | 5,026 | 41 | 18.0% |
| Leisure Knoll, NJ | 2,580 | 41 | 18.0% |
| Roosevelt, NJ | 913 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Okoboji, IA | 913 | 32 | 36.0% |
| Little Rock, MN | 913 | 33 | 34.0% |
| Humboldt, NE | 913 | 31 | 38.0% |
| Unadilla, NY | 913 | 27 | 46.0% |
| Selma, OR | 913 | 26 | 48.0% |
| Roosevelt, NJ | 913 | 41 | 18.0% |
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