Air quality in Silver Spring
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
8.9 µg/m³
WHO guideline 15
PM10
9.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 PM
💨
PM2.5 8.9 µg/m³
37Good
9:00 PM
💨
PM2.5 6.1 µg/m³
34Good
10:00 PM
💨
PM2.5 3.9 µg/m³
32Good
11:00 PM
💨
PM2.5 4.5 µg/m³
30Good
12:00 AM
💨
PM2.5 6.5 µg/m³
29Good
1:00 AM
💨
PM2.5 8.4 µg/m³
35Good
2:00 AM
💨
PM2.5 9.4 µg/m³
39Good
3:00 AM
💨
PM2.5 9.7 µg/m³
40Good
4:00 AM
💨
PM2.5 8.2 µg/m³
34Good
5:00 AM
💨
PM2.5 9.3 µg/m³
39Good
6:00 AM
💨
PM2.5 9.1 µg/m³
38Good
7:00 AM
💨
PM2.5 8 µg/m³
33Good
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV Very high
66
Mon
💨
Moderate · UV High
76
Tue
💨
Moderate · UV Very high
78
Wed
💨
Unhealthy for Sensitive Groups · UV Very high
103