| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 41°F | 33°F | 2.7" |
| February | 25°F | 42°F | 33°F | 2.3" |
| March | 32°F | 50°F | 40°F | 3.3" |
| April | 42°F | 60°F | 51°F | 3.7" |
| May | 52°F | 70°F | 60°F | 3.4" |
| June | 61°F | 78°F | 69°F | 4.3" |
| July | 68°F | 84°F | 76°F | 3.2" |
| August | 66°F | 83°F | 74°F | 3.4" |
| September | 60°F | 76°F | 68°F | 3.2" |
| October | 50°F | 66°F | 57°F | 3.5" |
| November | 39°F | 55°F | 47°F | 2.5" |
| December | 32°F | 46°F | 39°F | 4.5" |
| Index | West Hills | New York | National |
| Air quality index | 43 | 43 | 42 |
| Pollution index | 39,208,800 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 262 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 3 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.320% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.320% |
| Mercury | 0.130% |
| City | Population | Air Quality Index | National Avg. |
| Riverside, CT | 8,855 | 43 | 14.0% |
| Asharoken, NY | 586 | 43 | 14.0% |
| Eatons Neck, NY | 1,293 | 43 | 14.0% |
| Halesite, NY | 2,483 | 43 | 14.0% |
| Kings Park, NY | 16,153 | 43 | 14.0% |
| West Hills, NY | 5,225 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Wilton, CA | 5,224 | 52 | 4.0% |
| Hanwell, NB | 5,222 | n/a | |
| Poolesville, MD | 5,228 | 47 | 6.0% |
| Eaton Rapids, MI | 5,229 | 36 | 28.0% |
| Bangor, PA | 5,229 | 34 | 32.0% |
| West Hills, NY | 5,225 | 43 | 14.0% |
Here are the best places to live in New York
These are the 10 cheapest cities in New York
These are the largest cities in New York
See the best places to live in West Hills