Air quality in Gaithersburg
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
11.8 µg/m³
WHO guideline 15
PM10
13 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
12:00 PM
💨
PM2.5 11.8 µg/m³
49 Good
1:00 PM
💨
PM2.5 12.2 µg/m³
51 Moderate
2:00 PM
💨
PM2.5 11.4 µg/m³
68 Moderate
3:00 PM
💨
PM2.5 10.4 µg/m³
70 Moderate
4:00 PM
💨
PM2.5 9.7 µg/m³
61 Moderate
5:00 PM
💨
PM2.5 9.3 µg/m³
50 Good
6:00 PM
💨
PM2.5 8.7 µg/m³
43 Good
7:00 PM
💨
PM2.5 7.3 µg/m³
34 Good
8:00 PM
💨
PM2.5 4.3 µg/m³
28 Good
9:00 PM
💨
PM2.5 2.4 µg/m³
26 Good
10:00 PM
💨
PM2.5 1.9 µg/m³
27 Good
11:00 PM
💨
PM2.5 2 µg/m³
27 Good
Next few days daily max · US EPA AQI
Fri
💨
Moderate · UV Moderate
70
Sat
💨
Good · UV Moderate
34
Sun
💨
Moderate · UV Moderate
75
Mon
💨
Unhealthy for Sensitive Groups · UV Moderate
111
Tue
💨
Unhealthy for Sensitive Groups · UV Moderate
113
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain