Air quality in Needham
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
5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 AM
💨
PM2.5 4.8 µg/m³
37Good
11:00 AM
💨
PM2.5 4.5 µg/m³
43Good
12:00 PM
💨
PM2.5 4.9 µg/m³
46Good
1:00 PM
💨
PM2.5 5.5 µg/m³
49Good
2:00 PM
💨
PM2.5 6.1 µg/m³
51Moderate
3:00 PM
💨
PM2.5 6.4 µg/m³
53Moderate
4:00 PM
💨
PM2.5 6.7 µg/m³
48Good
5:00 PM
💨
PM2.5 7 µg/m³
49Good
6:00 PM
💨
PM2.5 7.5 µg/m³
47Good
7:00 PM
💨
PM2.5 7.9 µg/m³
44Good
8:00 PM
💨
PM2.5 8.6 µg/m³
40Good
9:00 PM
💨
PM2.5 10.1 µg/m³
42Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV High
53
Sun
💨
Moderate · UV High
73
Mon
💨
Moderate · UV High
56
Tue
💨
Moderate · UV High
78
Wed
💨
Moderate · UV Very high
70