Air quality in Rockville
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
7.3 µg/m³
WHO guideline 15
PM10
7.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 PM
💨
PM2.5 7.3 µg/m³
30Good
12:00 AM
💨
PM2.5 8.1 µg/m³
34Good
1:00 AM
💨
PM2.5 8.7 µg/m³
36Good
2:00 AM
💨
PM2.5 9.2 µg/m³
38Good
3:00 AM
💨
PM2.5 9.5 µg/m³
40Good
4:00 AM
💨
PM2.5 10.3 µg/m³
43Good
5:00 AM
💨
PM2.5 11.3 µg/m³
47Good
6:00 AM
💨
PM2.5 12 µg/m³
50Good
7:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
8:00 AM
💨
PM2.5 11.9 µg/m³
50Good
9:00 AM
💨
PM2.5 8.4 µg/m³
35Good
10:00 AM
💨
PM2.5 7.9 µg/m³
37Good
Next few days
daily max · US EPA AQI
Mon
💨
Good · UV Very high
45
Tue
💨
Moderate · UV Very high
86
Wed
💨
Moderate · UV High
95