| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 41°F | 33°F | 4.3" |
| February | 26°F | 43°F | 34°F | 4.2" |
| March | 32°F | 51°F | 40°F | 3.4" |
| April | 44°F | 65°F | 53°F | 2.9" |
| May | 54°F | 75°F | 63°F | 5.6" |
| June | 63°F | 82°F | 72°F | 5.9" |
| July | 70°F | 87°F | 77°F | 4.9" |
| August | 68°F | 85°F | 76°F | 2.9" |
| September | 62°F | 80°F | 70°F | 3.0" |
| October | 52°F | 68°F | 60°F | 3.7" |
| November | 39°F | 56°F | 47°F | 3.2" |
| December | 35°F | 48°F | 41°F | 4.7" |
| Index | Cliffside Park | New Jersey | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 15,202,500 | 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 | 0.010% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.060% |
| Lead | 0.050% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Scarsdale, NY | 17,890 | 51 | 2.0% |
| Franklin Lakes, NJ | 11,044 | 51 | 2.0% |
| Oakland, NJ | 12,953 | 51 | 2.0% |
| Waldwick, NJ | 10,051 | 51 | 2.0% |
| Hartsdale, NY | 3,205 | 51 | 2.0% |
| Cliffside Park, NJ | 25,410 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Melrose Park, IL | 25,404 | 55 | 10.0% |
| Carbondale, IL | 25,400 | 43 | 14.0% |
| Woodstock, IL | 25,391 | 42 | 16.0% |
| Tarpon Springs, FL | 25,389 | 43 | 14.0% |
| Thetford Mines, QC | 25,383 | n/a | |
| Cliffside Park, NJ | 25,410 | 51 | 2.0% |
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