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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 20°F | 36°F | 28°F | 5.0" | 
| February | 21°F | 38°F | 28°F | 4.7" | 
| March | 27°F | 46°F | 35°F | 5.5" | 
| April | 39°F | 59°F | 48°F | 4.7" | 
| May | 48°F | 68°F | 57°F | 4.3" | 
| June | 57°F | 77°F | 66°F | 5.2" | 
| July | 64°F | 83°F | 72°F | 4.4" | 
| August | 62°F | 81°F | 70°F | 4.4" | 
| September | 56°F | 74°F | 64°F | 3.7" | 
| October | 45°F | 63°F | 53°F | 7.1" | 
| November | 35°F | 52°F | 43°F | 4.1" | 
| December | 26°F | 41°F | 33°F | 5.9" | 
| Index | Weymouth Town | Massachusetts | National | 
| Air quality index | 43 | 40 | 42 | 
| Pollution index | 24,018,000 | 8,399,610 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 365 | 
| Days with good air quality | 291 | 
| Days with moderate air quality | 73 | 
| Days w/ poor A.Q. for sensitive groups | 1 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.030% | 
| Benzene | 0.220% | 
| Carbon Tetrachloride | 0.100% | 
| Lead | 0.280% | 
| Mercury | 0.130% | 
| City | Population | Air Quality Index | National Avg. | 
| Green Harbor-Cedar Crest, MA | 2,770 | 43 | 14.0% | 
| Marshfield, MA | 5,190 | 43 | 14.0% | 
| Arlington, MA | 45,379 | 43 | 14.0% | 
| Chelsea, MA | 39,878 | 43 | 14.0% | 
| Watertown Town, MA | 35,749 | 43 | 14.0% | 
| Weymouth Town, MA | 57,213 | 43 | 14.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Huntersville, NC | 57,288 | 49 | 2.0% | 
| Casa Grande, AZ | 57,318 | 74 | 48.0% | 
| Taunton, MA | 57,327 | 44 | 12.0% | 
| Hanford, CA | 57,339 | 56 | 12.0% | 
| Bradenton, FL | 57,346 | 38 | 24.0% | 
| Weymouth Town, MA | 57,213 | 43 | 14.0% |