| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 33°F | 3.8" |
| February | 25°F | 45°F | 34°F | 3.3" |
| March | 32°F | 54°F | 42°F | 3.9" |
| April | 43°F | 67°F | 54°F | 4.1" |
| May | 53°F | 76°F | 63°F | 4.5" |
| June | 63°F | 84°F | 73°F | 5.5" |
| July | 69°F | 90°F | 79°F | 4.4" |
| August | 67°F | 87°F | 77°F | 4.8" |
| September | 60°F | 81°F | 70°F | 3.2" |
| October | 49°F | 70°F | 59°F | 5.1" |
| November | 38°F | 58°F | 48°F | 3.3" |
| December | 31°F | 48°F | 39°F | 5.0" |
| Index | Kearny | New Jersey | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 7,391,620 | 7,246,891 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 169 |
| Days with moderate air quality | 180 |
| Days w/ poor A.Q. for sensitive groups | 16 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.020% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| New Providence, NJ | 13,382 | 51 | 2.0% |
| Fanwood, NJ | 7,686 | 51 | 2.0% |
| Mountainside, NJ | 6,859 | 51 | 2.0% |
| Westfield, NJ | 29,690 | 51 | 2.0% |
| Fairview CDP, NJ | 3,842 | 51 | 2.0% |
| Kearny, NJ | 41,190 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Moline, IL | 41,213 | 46 | 8.0% |
| Shelton, CT | 41,162 | 41 | 18.0% |
| Greenacres, FL | 41,242 | 36 | 28.0% |
| Belleville, IL | 41,256 | 54 | 8.0% |
| Bremerton, WA | 41,258 | 18 | 64.0% |
| Kearny, NJ | 41,190 | 51 | 2.0% |
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