Air quality in Dorchester
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
8.7 µg/m³
WHO guideline 15
PM10
11.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 8.7 µg/m³
46Good
12:00 PM
💨
PM2.5 8.6 µg/m³
50Good
1:00 PM
💨
PM2.5 8.7 µg/m³
55Moderate
2:00 PM
💨
PM2.5 8.6 µg/m³
60Moderate
3:00 PM
💨
PM2.5 8.2 µg/m³
63Moderate
4:00 PM
💨
PM2.5 8.3 µg/m³
65Moderate
5:00 PM
💨
PM2.5 8.3 µg/m³
61Moderate
6:00 PM
💨
PM2.5 8.6 µg/m³
50Good
7:00 PM
💨
PM2.5 9.2 µg/m³
46Good
8:00 PM
💨
PM2.5 9.5 µg/m³
42Good
9:00 PM
💨
PM2.5 10.2 µg/m³
43Good
10:00 PM
💨
PM2.5 10.8 µg/m³
45Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
65
Sat
💨
Moderate · UV Low
51
Sun
💨
Moderate · UV Low
70