Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 26°F | 41°F | 33°F | 4.1" |
February | 25°F | 40°F | 33°F | 4.0" |
March | 31°F | 45°F | 38°F | 3.9" |
April | 40°F | 55°F | 47°F | 3.7" |
May | 49°F | 64°F | 55°F | 3.8" |
June | 57°F | 72°F | 64°F | 3.5" |
July | 65°F | 80°F | 72°F | 3.4" |
August | 63°F | 79°F | 71°F | 3.8" |
September | 58°F | 73°F | 65°F | 3.5" |
October | 49°F | 63°F | 56°F | 4.9" |
November | 39°F | 54°F | 47°F | 4.3" |
December | 31°F | 46°F | 39°F | 4.6" |
Index | West Chatham | Massachusetts | National |
Air quality index | 36 | 40 | 42 |
Pollution index | 7,903,830 | 8,399,610 | 2,726,193 |
Measurement | Total |
Days measured | 359 |
Days with good air quality | 348 |
Days with moderate air quality | 11 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.070% |
Carbon Tetrachloride | 0.010% |
Lead | 0.080% |
Mercury | 0.030% |
City | Population | Air Quality Index | National Avg. |
Orleans, MA | 1,519 | 36 | 28.0% |
Dennis Port, MA | 3,523 | 36 | 28.0% |
Harwich Port, MA | 1,906 | 36 | 28.0% |
Yarmouth Port, MA | 5,202 | 36 | 28.0% |
Chatham, MA | 1,550 | 36 | 28.0% |
West Chatham, MA | 1,224 | 36 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Pioneer, CA | 1,224 | 39 | 22.0% |
Talahi Island, GA | 1,224 | 39 | 22.0% |
Conrad, IA | 1,224 | 39 | 22.0% |
Arenas Valley, NM | 1,224 | 37 | 26.0% |
Maywood Park, OR | 1,224 | 38 | 24.0% |
West Chatham, MA | 1,224 | 36 | 28.0% |