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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 42°F | 34°F | 6.3" |
| February | 24°F | 42°F | 32°F | 4.9" |
| March | 31°F | 50°F | 40°F | 7.3" |
| April | 46°F | 67°F | 55°F | 5.0" |
| May | 56°F | 76°F | 65°F | 9.9" |
| June | 64°F | 83°F | 73°F | 8.3" |
| July | 71°F | 87°F | 78°F | 8.3" |
| August | 67°F | 84°F | 75°F | 7.8" |
| September | 61°F | 80°F | 70°F | 4.9" |
| October | 54°F | 72°F | 62°F | 6.3" |
| November | 38°F | 56°F | 46°F | 5.9" |
| December | 33°F | 46°F | 39°F | 5.8" |
| Index | South Amboy | New Jersey | National |
| Air quality index | 51 | 45 | 42 |
| Pollution index | 9,503,730 | 7,246,891 | 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 | 0.010% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Kendall Park, NJ | 9,852 | 41 | 18.0% |
| Franklin Center, NJ | 5,536 | 41 | 18.0% |
| Somerset, NJ | 24,119 | 41 | 18.0% |
| Clearbrook Park, NJ | 3,114 | 41 | 18.0% |
| Rossmoor, NJ | 2,700 | 41 | 18.0% |
| South Amboy, NJ | 8,868 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Newark, NY | 8,868 | 37 | 26.0% |
| Farmingdale, NY | 8,869 | 51 | 2.0% |
| New Windsor, NY | 8,866 | 36 | 28.0% |
| Poteau, OK | 8,866 | 36 | 28.0% |
| Fort Knox, KY | 8,865 | 39 | 22.0% |
| South Amboy, NJ | 8,868 | 51 | 2.0% |
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