| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 41°F | 31°F | 2.8" |
| February | 22°F | 43°F | 31°F | 2.3" |
| March | 30°F | 53°F | 41°F | 3.7" |
| April | 39°F | 66°F | 52°F | 4.0" |
| May | 49°F | 75°F | 62°F | 3.7" |
| June | 58°F | 83°F | 70°F | 5.3" |
| July | 63°F | 87°F | 75°F | 5.3" |
| August | 61°F | 85°F | 72°F | 5.5" |
| September | 55°F | 79°F | 66°F | 3.6" |
| October | 43°F | 68°F | 55°F | 4.5" |
| November | 33°F | 56°F | 44°F | 3.0" |
| December | 27°F | 46°F | 36°F | 4.6" |
| Index | Glen Gardner | New Jersey | National |
| Air quality index | 34 | 45 | 42 |
| Pollution index | 3,167,110 | 7,246,891 | 2,726,193 |
| Measurement | Total |
| Days measured | 349 |
| Days with good air quality | 340 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Asbury, NJ | 207 | 34 | 32.0% |
| Harmony, NJ | 410 | 34 | 32.0% |
| Port Colden, NJ | 82 | 34 | 32.0% |
| Budd Lake, NJ | 10,444 | 34 | 32.0% |
| Long Valley, NJ | 2,327 | 34 | 32.0% |
| Glen Gardner, NJ | 1,554 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Roseland, FL | 1,554 | 36 | 28.0% |
| Cannon Beach, OR | 1,554 | 18 | 64.0% |
| Whitehall, WI | 1,554 | 15 | 70.0% |
| Palmyra, IN | 1,553 | 49 | 2.0% |
| Shelburn, IN | 1,553 | 45 | 10.0% |
| Glen Gardner, NJ | 1,554 | 34 | 32.0% |
Here are the best places to live in New Jersey
Safest Cities In The US
See the best places to live in Glen Gardner
These are the largest cities in New Jersey