Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 40°F | 32°F | 2.6" |
February | 23°F | 41°F | 32°F | 2.8" |
March | 30°F | 48°F | 39°F | 3.4" |
April | 40°F | 60°F | 50°F | 4.5" |
May | 50°F | 69°F | 59°F | 3.8" |
June | 60°F | 78°F | 68°F | 4.7" |
July | 66°F | 84°F | 75°F | 3.1" |
August | 64°F | 82°F | 74°F | 3.7" |
September | 58°F | 77°F | 67°F | 3.2" |
October | 47°F | 66°F | 57°F | 4.5" |
November | 37°F | 55°F | 46°F | 2.9" |
December | 30°F | 45°F | 37°F | 4.2" |
Index | North Haven | Connecticut | National |
Air quality index | 41 | 43 | 42 |
Pollution index | 14,500,300 | 8,629,883 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 280 |
Days with moderate air quality | 71 |
Days w/ poor A.Q. for sensitive groups | 12 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 0.030% |
Benzene | 0.140% |
Carbon Tetrachloride | 0.050% |
Lead | 0.080% |
Mercury | 0.060% |
City | Population | Air Quality Index | National Avg. |
Oakville, CT | 9,679 | 37 | 26.0% |
Portland, CT | 5,937 | 41 | 18.0% |
Naugatuck, CT | 31,201 | 41 | 18.0% |
Shelton, CT | 41,162 | 41 | 18.0% |
Guilford Center, CT | 2,653 | 41 | 18.0% |
North Haven, CT | 23,665 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
Muscatine, IA | 23,661 | 32 | 36.0% |
Searcy, AR | 23,673 | 45 | 10.0% |
Newberg, OR | 23,676 | 38 | 24.0% |
Zion, IL | 23,677 | 39 | 22.0% |
Windsor, CO | 23,679 | 45 | 10.0% |
North Haven, CT | 23,665 | 41 | 18.0% |