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 | New 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. |
Cheshire Village, CT | 6,491 | 41 | 18.0% |
North Haven, CT | 23,665 | 41 | 18.0% |
Branford Center, CT | 5,845 | 41 | 18.0% |
Ansonia, CT | 18,709 | 41 | 18.0% |
Durham, CT | 3,542 | 41 | 18.0% |
New Haven, CT | 130,381 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
Stamford, CT | 130,057 | 43 | 14.0% |
Kent, WA | 130,038 | 45 | 10.0% |
Concord, CA | 129,227 | 40 | 20.0% |
Round Rock, TX | 128,812 | 44 | 12.0% |
Langley, BC | 132,088 | n/a | |
New Haven, CT | 130,381 | 41 | 18.0% |