| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 40°F | 31°F | 5.0" |
| February | 21°F | 38°F | 29°F | 3.2" |
| March | 27°F | 49°F | 37°F | 8.8" |
| April | 39°F | 62°F | 50°F | 10.1" |
| May | 49°F | 73°F | 61°F | 2.7" |
| June | 61°F | 83°F | 72°F | 6.6" |
| July | 65°F | 85°F | 75°F | 8.4" |
| August | 65°F | 86°F | 75°F | 7.9" |
| September | 56°F | 81°F | 68°F | 2.2" |
| October | 49°F | 68°F | 58°F | 15.6" |
| November | 34°F | 55°F | 44°F | 6.5" |
| December | 26°F | 40°F | 33°F | 8.0" |
| Index | White Meadow Lake | New Jersey | National |
| Air quality index | 34 | 45 | 42 |
| Pollution index | 8,169,930 | 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 | 0.010% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Mendham, NJ | 4,880 | 34 | 32.0% |
| Byram Center, NJ | 2,017 | 34 | 32.0% |
| Kenvil, NJ | 1,934 | 34 | 32.0% |
| Netcong, NJ | 3,167 | 34 | 32.0% |
| Wharton, NJ | 6,458 | 34 | 32.0% |
| White Meadow Lake, NJ | 9,166 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Tiburon, CA | 9,167 | 40 | 20.0% |
| Fishersville, VA | 9,164 | 36 | 28.0% |
| Beecher, MI | 9,168 | 38 | 24.0% |
| Plymouth, MI | 9,168 | 40 | 20.0% |
| Incline Village, NV | 9,160 | 41 | 18.0% |
| White Meadow Lake, NJ | 9,166 | 34 | 32.0% |
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