| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 41°F | 32°F | 4.0" |
| February | 24°F | 43°F | 33°F | 3.0" |
| March | 31°F | 50°F | 40°F | 4.2" |
| April | 41°F | 61°F | 50°F | 3.5" |
| May | 51°F | 71°F | 60°F | 3.6" |
| June | 60°F | 79°F | 69°F | 4.7" |
| July | 68°F | 85°F | 76°F | 3.1" |
| August | 65°F | 83°F | 74°F | 5.6" |
| September | 60°F | 78°F | 68°F | 3.1" |
| October | 49°F | 67°F | 58°F | 4.1" |
| November | 37°F | 56°F | 46°F | 3.0" |
| December | 31°F | 47°F | 39°F | 4.9" |
| Index | Centereach | 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. |
| Islip Terrace, NY | 5,244 | 43 | 14.0% |
| Oakdale, NY | 6,947 | 43 | 14.0% |
| West Sayville, NY | 4,956 | 43 | 14.0% |
| Hauppauge, NY | 19,661 | 43 | 14.0% |
| Lake Grove, NY | 11,083 | 43 | 14.0% |
| Centereach, NY | 31,100 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Saratoga, CA | 31,084 | 43 | 14.0% |
| Lakeside, FL | 31,058 | 43 | 14.0% |
| Hopkinsville, KY | 31,052 | 40 | 20.0% |
| Princeton, NJ | 31,161 | 41 | 18.0% |
| Needham, MA | 31,177 | 43 | 14.0% |
| Centereach, NY | 31,100 | 43 | 14.0% |
Here are the best places to live in New York
Check out the 10 most dangerous cities in New York
Most Dangerous Cities In The US
Safest States In The US