Air quality in West Somerville/Davis Square
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
4.8 µg/m³
WHO guideline 15
PM10
4.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 4.8 µg/m³
47Good
12:00 PM
💨
PM2.5 5.1 µg/m³
53Moderate
1:00 PM
💨
PM2.5 4.8 µg/m³
61Moderate
2:00 PM
💨
PM2.5 4.9 µg/m³
66Moderate
3:00 PM
💨
PM2.5 5 µg/m³
68Moderate
4:00 PM
💨
PM2.5 5 µg/m³
65Moderate
5:00 PM
💨
PM2.5 4.5 µg/m³
56Moderate
6:00 PM
💨
PM2.5 4.4 µg/m³
48Good
7:00 PM
💨
PM2.5 5.1 µg/m³
41Good
8:00 PM
💨
PM2.5 7.9 µg/m³
35Good
9:00 PM
💨
PM2.5 9 µg/m³
38Good
10:00 PM
💨
PM2.5 8.9 µg/m³
37Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
68
Thu
💨
Moderate · UV High
91
Fri
💨
Moderate · UV High
81
Sat
💨
Good · UV Moderate
50
Sun
💨
Moderate · UV Very high
53