| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 36°F | 27°F | 4.8" |
| February | 17°F | 36°F | 26°F | 5.2" |
| March | 25°F | 43°F | 34°F | 8.7" |
| April | 35°F | 55°F | 45°F | 9.9" |
| May | 45°F | 65°F | 54°F | 9.0" |
| June | 55°F | 77°F | 66°F | 3.2" |
| July | 60°F | 81°F | 70°F | 5.0" |
| August | 61°F | 83°F | 71°F | 1.9" |
| September | 53°F | 77°F | 65°F | 4.2" |
| October | 45°F | 64°F | 54°F | 9.9" |
| November | 32°F | 52°F | 42°F | 5.4" |
| December | 22°F | 38°F | 30°F | 6.9" |
| Index | Lynn | 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. |
| Revere, MA | 53,400 | 43 | 14.0% |
| Hull, MA | 10,478 | 43 | 14.0% |
| Beverly, MA | 42,062 | 43 | 14.0% |
| Salem, MA | 43,350 | 43 | 14.0% |
| Belmont, MA | 26,158 | 43 | 14.0% |
| Lynn, MA | 94,201 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Victoria, BC | 94,229 | n/a | |
| Concord, NC | 94,147 | 40 | 20.0% |
| Dearborn, MI | 94,328 | 56 | 12.0% |
| Plantation, FL | 94,366 | 41 | 18.0% |
| Quincy, MA | 94,389 | 43 | 14.0% |
| Lynn, MA | 94,201 | 43 | 14.0% |
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