| 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 | Croton-on-Hudson | 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. |
| Pomona, NY | 3,058 | 36 | 28.0% |
| Thiells, NY | 4,247 | 36 | 28.0% |
| West Point, NY | 6,328 | 36 | 28.0% |
| West Haverstraw, NY | 10,220 | 36 | 28.0% |
| Heritage Hills, NY | 4,309 | 36 | 28.0% |
| Croton-on-Hudson, NY | 8,121 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Oak Island, NC | 8,118 | 34 | 32.0% |
| Oradell, NJ | 8,126 | 51 | 2.0% |
| Island Lake, IL | 8,112 | 39 | 22.0% |
| Beebe, AR | 8,131 | 45 | 10.0% |
| North Bay Village, FL | 8,108 | 41 | 18.0% |
| Croton-on-Hudson, NY | 8,121 | 36 | 28.0% |
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