Air quality in Melrose
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
8.1 µg/m³
WHO guideline 15
PM10
10.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 8.1 µg/m³
36Good
6:00 PM
💨
PM2.5 8.6 µg/m³
36Good
7:00 PM
💨
PM2.5 8.5 µg/m³
35Good
8:00 PM
💨
PM2.5 8.9 µg/m³
37Good
9:00 PM
💨
PM2.5 9 µg/m³
38Good
10:00 PM
💨
PM2.5 9.9 µg/m³
41Good
11:00 PM
💨
PM2.5 12.5 µg/m³
52Moderate
12:00 AM
💨
PM2.5 11.5 µg/m³
48Good
1:00 AM
💨
PM2.5 13.8 µg/m³
55Moderate
2:00 AM
💨
PM2.5 12.4 µg/m³
52Moderate
3:00 AM
💨
PM2.5 11.5 µg/m³
48Good
4:00 AM
💨
PM2.5 11.3 µg/m³
47Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV Low
53
Sun
💨
Moderate · UV Moderate
65
Tue
💨
Good · UV Moderate
42