| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 38°F | 29°F | 6.3" |
| February | 20°F | 38°F | 29°F | 6.1" |
| March | 28°F | 47°F | 37°F | 8.2" |
| April | 39°F | 59°F | 48°F | 7.7" |
| May | 48°F | 69°F | 58°F | 6.4" |
| June | 56°F | 76°F | 65°F | 7.2" |
| July | 63°F | 82°F | 72°F | 10.6" |
| August | 60°F | 80°F | 69°F | 9.0" |
| September | 54°F | 73°F | 63°F | 8.3" |
| October | 44°F | 63°F | 53°F | 7.9" |
| November | 35°F | 52°F | 43°F | 8.0" |
| December | 27°F | 42°F | 34°F | 7.8" |
| Index | Woonsocket | Rhode Island | National |
| Air quality index | 44 | 45 | 42 |
| Pollution index | 8,312,000 | 3,440,259 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 289 |
| Days with moderate air quality | 74 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.090% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.210% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| East Douglas, MA | 2,985 | 40 | 20.0% |
| Upton, MA | 2,279 | 40 | 20.0% |
| Whitinsville, MA | 7,435 | 40 | 20.0% |
| Hopedale, MA | 3,643 | 40 | 20.0% |
| Milford, MA | 26,072 | 40 | 20.0% |
| Woonsocket, RI | 41,616 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Rancho Palos Verdes, CA | 41,635 | 72 | 44.0% |
| Catonsville, MD | 41,592 | 46 | 8.0% |
| Mableton, GA | 41,647 | 52 | 4.0% |
| La Quinta, CA | 41,650 | 89 | 78.0% |
| Leominster, MA | 41,581 | 40 | 20.0% |
| Woonsocket, RI | 41,616 | 44 | 12.0% |
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