5.5 ug/m3
Avg PM2.5
Top 10 cleanest
Air quality rank
Few (smoke events)
Unhealthy days 2023
Historical data
Coming soon
Long-run charts for this indicator are on the way.
Compared to the United States
| Indicator | Maine | United States |
|---|---|---|
| Average PM2.5 (ug/m3) | 5.5 | 8 |
National ranking
Maine ranks #6 of 33 states by average pm2.5.
| #1 | Kentucky | 0 |
| #2 | Louisiana | 0 |
| #3 | Vermont | 4 |
| #4 | Wyoming | 4 |
| #5 | South Dakota | 5.5 |
| #6 | Maine | 5.5 |
| #7 | Massachusetts | 6.4 |
| #8 | Rhode Island | 6.8 |
| #9 | Florida | 6.9 |
| #10 | New York | 6.9 |
| #11 | Delaware | 7 |
| #12 | Virginia | 7.6 |
| #13 | Wisconsin | 7.6 |
| #14 | Washington | 7.6 |
| #15 | Michigan | 8 |
| #16 | Tennessee | 8.1 |
| #17 | North Carolina | 8.1 |
| #18 | New Jersey | 8.4 |
| #19 | Missouri | 8.4 |
| #20 | Arizona | 8.5 |
| #21 | Georgia | 8.7 |
| #22 | Indiana | 8.9 |
| #23 | Ohio | 9.1 |
| #24 | Illinois | 9.1 |
| #25 | Minnesota | 10 |
| #26 | Utah | 18 |
| #27 | Colorado | 25 |
| #28 | Alaska | 30 |
| #29 | Montana | 35 |
| #30 | New Hampshire | 35 |
| #31 | Texas | 48 |
| #32 | Oregon | 85% |
| #33 | New Mexico | 300 |
Overview
Maine air quality ranks among the cleanest in the eastern United States, aided by coastal winds and low industrial density. Maine air quality has occasionally worsened from Canadian wildfire smoke drifting south in summer.
Did you know?
- Canadian wildfire smoke pushed Maine's air quality index into unhealthy ranges briefly in June 2023.