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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 24°F | 41°F | 33°F | 3.3" | 
| February | 24°F | 41°F | 33°F | 2.8" | 
| March | 29°F | 47°F | 38°F | 3.1" | 
| April | 38°F | 57°F | 47°F | 3.5" | 
| May | 47°F | 67°F | 57°F | 3.6" | 
| June | 55°F | 74°F | 65°F | 3.5" | 
| July | 63°F | 81°F | 72°F | 3.5" | 
| August | 60°F | 80°F | 70°F | 3.5" | 
| September | 54°F | 74°F | 64°F | 3.6" | 
| October | 46°F | 65°F | 56°F | 5.1" | 
| November | 37°F | 55°F | 47°F | 3.9" | 
| December | 30°F | 47°F | 39°F | 4.3" | 
| Index | Edgartown | 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. | 
| Falmouth, MA | 3,751 | 36 | 28.0% | 
| Popponesset Island, MA | 35 | 36 | 28.0% | 
| Vineyard Haven, MA | 1,903 | 36 | 28.0% | 
| Monomoscoy Island, MA | 114 | 36 | 28.0% | 
| Seabrook, MA | 520 | 36 | 28.0% | 
| Edgartown, MA | 517 | 36 | 28.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Garfield, AR | 517 | 44 | 12.0% | 
| Mesquite Creek, AZ | 517 | 13 | 74.0% | 
| Reddick, FL | 517 | 38 | 24.0% | 
| Burt, IA | 517 | 15 | 70.0% | 
| Fillmore, IN | 517 | 54 | 8.0% | 
| Edgartown, MA | 517 | 36 | 28.0% |