Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 19°F | 36°F | 27°F | 5.3" |
February | 19°F | 37°F | 27°F | 6.2" |
March | 27°F | 45°F | 35°F | 7.3" |
April | 37°F | 58°F | 47°F | 7.5" |
May | 47°F | 68°F | 57°F | 7.1" |
June | 56°F | 76°F | 65°F | 8.3" |
July | 63°F | 83°F | 72°F | 7.9" |
August | 60°F | 81°F | 70°F | 8.4" |
September | 54°F | 74°F | 63°F | 8.5" |
October | 43°F | 63°F | 52°F | 8.2" |
November | 33°F | 52°F | 42°F | 6.9" |
December | 24°F | 41°F | 32°F | 6.3" |
Index | Durham | New Hampshire | National |
Air quality index | 37 | 34 | 42 |
Pollution index | 91,790 | 3,959,618 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 353 |
Days with moderate air quality | 12 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.002% |
Carbon Tetrachloride | 0.000% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Berwick, ME | 1,985 | 27 | 46.0% |
Rochester, NH | 31,305 | 27 | 46.0% |
Portsmouth, NH | 21,418 | 37 | 26.0% |
Exeter, NH | 9,349 | 37 | 26.0% |
South Eliot, ME | 3,047 | 37 | 26.0% |
Durham, NH | 12,016 | 37 | 26.0% |
City | Population | Air Quality Index | National Avg. |
Port Lavaca, TX | 12,015 | 31 | 38.0% |
Kings, Subd. B, NS | 12,020 | n/a | |
Babylon, NY | 12,011 | 51 | 2.0% |
Rawdon, QC | 12,021 | n/a | |
Adjala-Tosorontio, ON | 12,021 | n/a | |
Durham, NH | 12,016 | 37 | 26.0% |