| 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 | Brookville | New York | National |
| Air quality index | 51 | 43 | 42 |
| Pollution index | 22,367,000 | 6,179,275 | 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 | 0.040% |
| Benzene | 0.180% |
| Carbon Tetrachloride | 0.070% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Huntington Bay, NY | 1,614 | 43 | 14.0% |
| South Huntington, NY | 10,186 | 43 | 14.0% |
| Deer Park, NY | 26,043 | 43 | 14.0% |
| Byram, CT | 4,855 | 43 | 14.0% |
| Centerport, NY | 5,773 | 43 | 14.0% |
| Brookville, NY | 3,599 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Peralta, NM | 3,599 | 53 | 6.0% |
| Beausejour, MB | 3,599 | n/a | |
| Greenwood, PA | 3,597 | 41 | 18.0% |
| Toledo, OR | 3,601 | 17 | 66.0% |
| Elim, PA | 3,596 | 39 | 22.0% |
| Brookville, NY | 3,599 | 51 | 2.0% |
Here are the best places to live in New York
These are the 10 cheapest cities in New York
Most Dangerous Cities In The US
Most Dangerous States In The US