| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 39°F | 30°F | 3.0" |
| February | 23°F | 40°F | 31°F | 2.6" |
| March | 30°F | 49°F | 39°F | 3.5" |
| April | 41°F | 62°F | 50°F | 4.2" |
| May | 50°F | 71°F | 60°F | 4.2" |
| June | 60°F | 79°F | 69°F | 5.1" |
| July | 66°F | 84°F | 74°F | 4.4" |
| August | 64°F | 82°F | 72°F | 4.2" |
| September | 57°F | 77°F | 66°F | 4.3" |
| October | 47°F | 65°F | 55°F | 5.1" |
| November | 37°F | 54°F | 45°F | 3.1" |
| December | 29°F | 44°F | 36°F | 4.5" |
| Index | Crompond | New York | National |
| Air quality index | 36 | 43 | 42 |
| Pollution index | 16,950,700 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 319 |
| Days with moderate air quality | 46 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.070% |
| Lead | 0.080% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Newburgh, NY | 28,146 | 36 | 28.0% |
| Jefferson Valley-Yorktown, NY | 13,786 | 36 | 28.0% |
| Shrub Oak, NY | 3,094 | 36 | 28.0% |
| Salisbury Mills, NY | 288 | 36 | 28.0% |
| Peekskill, NY | 24,111 | 36 | 28.0% |
| Crompond, NY | 2,273 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Fair Haven, VT | 2,273 | 36 | 28.0% |
| Connelly Springs, NC | 2,272 | 43 | 14.0% |
| Manchester Center, VT | 2,272 | 35 | 30.0% |
| Neebing, ON | 2,272 | n/a | |
| Sky Valley, CA | 2,274 | 89 | 78.0% |
| Crompond, NY | 2,273 | 36 | 28.0% |
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