Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 25°F | 42°F | 33°F | 3.3" |
February | 25°F | 43°F | 34°F | 2.4" |
March | 33°F | 53°F | 42°F | 3.4" |
April | 43°F | 66°F | 54°F | 3.8" |
May | 52°F | 75°F | 63°F | 3.9" |
June | 62°F | 83°F | 72°F | 5.3" |
July | 67°F | 88°F | 77°F | 5.1" |
August | 65°F | 85°F | 75°F | 4.7" |
September | 59°F | 79°F | 68°F | 3.5" |
October | 48°F | 68°F | 57°F | 4.2" |
November | 37°F | 57°F | 46°F | 2.9" |
December | 31°F | 47°F | 38°F | 4.3" |
Index | Princeton | New Jersey | National |
Air quality index | 41 | 45 | 42 |
Pollution index | 3,313,920 | 7,246,891 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 280 |
Days with moderate air quality | 83 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.350% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.004% |
Lead | 0.350% |
Mercury | 0.340% |
City | Population | Air Quality Index | National Avg. |
Allentown, NJ | 1,740 | 41 | 18.0% |
Fairless Hills, PA | 8,427 | 41 | 18.0% |
Newtown, PA | 1,951 | 41 | 18.0% |
Yardley, PA | 2,496 | 41 | 18.0% |
Belle Mead, NJ | 5,492 | 41 | 18.0% |
Princeton, NJ | 31,161 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
Needham, MA | 31,177 | 43 | 14.0% |
Michigan City, IN | 31,191 | 37 | 26.0% |
Naugatuck, CT | 31,201 | 41 | 18.0% |
Centereach, NY | 31,100 | 43 | 14.0% |
Sherwood, AR | 31,225 | 45 | 10.0% |
Princeton, NJ | 31,161 | 41 | 18.0% |