| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 43°F | 34°F | 3.4" |
| February | 26°F | 44°F | 34°F | 2.8" |
| March | 33°F | 52°F | 41°F | 3.7" |
| April | 43°F | 63°F | 52°F | 3.7" |
| May | 52°F | 71°F | 61°F | 4.2" |
| June | 62°F | 81°F | 71°F | 4.7" |
| July | 69°F | 86°F | 77°F | 4.2" |
| August | 68°F | 85°F | 76°F | 4.8" |
| September | 61°F | 79°F | 69°F | 3.4" |
| October | 51°F | 68°F | 59°F | 4.8" |
| November | 39°F | 57°F | 48°F | 3.0" |
| December | 32°F | 48°F | 40°F | 4.9" |
| Index | Baldwin Harbor | New York | National |
| Air quality index | 51 | 43 | 42 |
| Pollution index | 20,796,900 | 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 | 0.060% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.130% |
| Lead | 0.070% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Dix Hills, NY | 24,498 | 43 | 14.0% |
| West Hills, NY | 5,374 | 43 | 14.0% |
| Elwood, NY | 11,955 | 43 | 14.0% |
| Huntington Station, NY | 34,661 | 43 | 14.0% |
| Deer Park, NY | 26,661 | 43 | 14.0% |
| Baldwin Harbor, NY | 7,814 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Yreka, CA | 7,814 | 36 | 28.0% |
| Hales Corners, WI | 7,814 | 44 | 12.0% |
| Corning, CA | 7,816 | 41 | 18.0% |
| Arran-Elderslie, ON | 7,811 | n/a | |
| Chehalis, WA | 7,810 | 20 | 60.0% |
| Baldwin Harbor, NY | 7,814 | 51 | 2.0% |