Air quality in Downtown DC
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
31 µg/m³
WHO guideline 15
PM10
31.7 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
10:00 PM
💨
PM2.5 31 µg/m³
91 Moderate
11:00 PM
💨
PM2.5 33.8 µg/m³
97 Moderate
12:00 AM
💨
PM2.5 34.5 µg/m³
98 Moderate
1:00 AM
💨
PM2.5 34.5 µg/m³
98 Moderate
2:00 AM
💨
PM2.5 35.2 µg/m³
100 Moderate
3:00 AM
💨
PM2.5 34.6 µg/m³
98 Moderate
4:00 AM
💨
PM2.5 29.5 µg/m³
88 Moderate
5:00 AM
💨
PM2.5 23.6 µg/m³
75 Moderate
6:00 AM
💨
PM2.5 19.7 µg/m³
67 Moderate
7:00 AM
💨
PM2.5 18.4 µg/m³
64 Moderate
8:00 AM
💨
PM2.5 20.2 µg/m³
68 Moderate
9:00 AM
💨
PM2.5 19.3 µg/m³
66 Moderate
Next few days daily max · US EPA AQI
Tue
💨
Moderate · UV Moderate
97
Wed
💨
Moderate · UV High
100
Thu
💨
Moderate · UV High
99
Fri
💨
Unhealthy for Sensitive Groups · UV High
136
Sat
💨
Moderate · UV Low
71
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain