| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 29°F | 19°F | 1.7" |
| February | 10°F | 30°F | 20°F | 1.6" |
| March | 19°F | 40°F | 29°F | 1.7" |
| April | 32°F | 55°F | 43°F | 2.8" |
| May | 43°F | 69°F | 56°F | 3.8" |
| June | 52°F | 76°F | 63°F | 5.0" |
| July | 57°F | 80°F | 68°F | 5.0" |
| August | 55°F | 78°F | 66°F | 3.8" |
| September | 48°F | 73°F | 59°F | 2.7" |
| October | 38°F | 59°F | 48°F | 4.0" |
| November | 27°F | 46°F | 36°F | 1.9" |
| December | 17°F | 34°F | 25°F | 2.9" |
| Index | Irasburg | 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. |
| Lowell, VT | 143 | 37 | 26.0% |
| Troy, VT | 58 | 37 | 26.0% |
| Albany, VT | 176 | 37 | 26.0% |
| Newport Center, VT | 230 | 37 | 26.0% |
| North Troy, VT | 627 | 37 | 26.0% |
| Irasburg, 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% |
| Irasburg, VT | 106 | 37 | 26.0% |
Here are the best places to live in Vermont
These are the largest cities in Vermont
Check out the 10 most dangerous cities in Vermont
Check out the 10 safest cities in Vermont