| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 28°F | 19°F | 2.1" |
| February | 11°F | 30°F | 20°F | 2.5" |
| March | 19°F | 39°F | 29°F | 2.7" |
| April | 32°F | 55°F | 43°F | 3.3" |
| May | 43°F | 68°F | 55°F | 4.3" |
| June | 52°F | 75°F | 63°F | 6.0" |
| July | 57°F | 79°F | 68°F | 5.5" |
| August | 55°F | 78°F | 66°F | 4.0" |
| September | 48°F | 71°F | 59°F | 3.3" |
| October | 38°F | 58°F | 47°F | 5.2" |
| November | 27°F | 46°F | 36°F | 2.7" |
| December | 17°F | 33°F | 25°F | 3.6" |
| Index | Worcester | Vermont | National |
| Air quality index | 37 | 36 | 42 |
| Pollution index | 1,278,430 | 1,478,772 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 335 |
| Days with moderate air quality | 30 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Websterville, VT | 380 | 34 | 32.0% |
| South Barre, VT | 1,110 | 34 | 32.0% |
| Barre, VT | 8,590 | 34 | 32.0% |
| East Montpelier, VT | 82 | 37 | 26.0% |
| Plainfield, VT | 415 | 37 | 26.0% |
| Worcester, VT | 106 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Franklin CDP (Sacramento County), CA | 106 | 48 | 4.0% |
| Vona, CO | 106 | 45 | 10.0% |
| Arion, IA | 106 | 40 | 20.0% |
| Carpenter, IA | 106 | 15 | 70.0% |
| Popejoy, IA | 106 | 15 | 70.0% |
| Worcester, VT | 106 | 37 | 26.0% |
Here are the best places to live in Vermont
Top 10 cities in Vermont with the best education system
10 Best cities in Vermont for employment
Check out the 10 safest cities in Vermont