Air quality in Chelsea
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
6.8 µg/m³
WHO guideline 15
PM10
6.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 6.8 µg/m³
28Good
7:00 AM
💨
PM2.5 6.2 µg/m³
27Good
8:00 AM
💨
PM2.5 5.8 µg/m³
31Good
9:00 AM
💨
PM2.5 5.8 µg/m³
35Good
10:00 AM
💨
PM2.5 5.9 µg/m³
40Good
11:00 AM
💨
PM2.5 5.9 µg/m³
43Good
12:00 PM
💨
PM2.5 5.8 µg/m³
48Good
1:00 PM
💨
PM2.5 5.9 µg/m³
48Good
2:00 PM
💨
PM2.5 6 µg/m³
51Moderate
3:00 PM
💨
PM2.5 6 µg/m³
50Good
4:00 PM
💨
PM2.5 5.9 µg/m³
50Good
5:00 PM
💨
PM2.5 5.7 µg/m³
48Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Very high
51
Fri
💨
Moderate · UV Very high
76
Sat
💨
Moderate · UV Very high
88
Sun
💨
Unhealthy · UV Very high
152
Mon
💨
Moderate · UV Very high
51