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
4 µg/m³
WHO guideline 15
PM10
4.1 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
5:00 AM
💨
PM2.5 4 µg/m³
29 Good
6:00 AM
💨
PM2.5 4.1 µg/m³
29 Good
7:00 AM
💨
PM2.5 4.7 µg/m³
27 Good
8:00 AM
💨
PM2.5 6 µg/m³
28 Good
9:00 AM
💨
PM2.5 8 µg/m³
33 Good
10:00 AM
💨
PM2.5 8.5 µg/m³
40 Good
11:00 AM
💨
PM2.5 8.9 µg/m³
46 Good
12:00 PM
💨
PM2.5 9.5 µg/m³
50 Good
1:00 PM
💨
PM2.5 9.6 µg/m³
61 Moderate
2:00 PM
💨
PM2.5 9.8 µg/m³
66 Moderate
3:00 PM
💨
PM2.5 9.7 µg/m³
66 Moderate
4:00 PM
💨
PM2.5 9.5 µg/m³
61 Moderate
Next few days daily max · US EPA AQI
Wed
💨
Moderate · UV Moderate
66
Thu
💨
Moderate · UV Low
55
Fri
💨
Moderate · UV Moderate
63
Sat
💨
Good · UV Moderate
35
Sun
💨
Good · UV Moderate
27
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain