Air quality in Woburn
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
3.5 µg/m³
WHO guideline 15
PM10
3.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 3.5 µg/m³
38Good
6:00 PM
💨
PM2.5 4 µg/m³
36Good
7:00 PM
💨
PM2.5 4.5 µg/m³
34Good
8:00 PM
💨
PM2.5 4.9 µg/m³
32Good
9:00 PM
💨
PM2.5 5.6 µg/m³
30Good
10:00 PM
💨
PM2.5 6.4 µg/m³
28Good
11:00 PM
💨
PM2.5 7.1 µg/m³
30Good
12:00 AM
💨
PM2.5 7.5 µg/m³
31Good
1:00 AM
💨
PM2.5 7.6 µg/m³
32Good
2:00 AM
💨
PM2.5 7.4 µg/m³
31Good
3:00 AM
💨
PM2.5 7 µg/m³
29Good
4:00 AM
💨
PM2.5 6.5 µg/m³
28Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Moderate
65
Fri
💨
Moderate · UV High
76