Air quality in Houston
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
16.8 µg/m³
WHO guideline 15
PM10
16.9 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
3:00 AM
💨
PM2.5 16.8 µg/m³
61 Moderate
4:00 AM
💨
PM2.5 15.6 µg/m³
58 Moderate
5:00 AM
💨
PM2.5 14.2 µg/m³
55 Moderate
6:00 AM
💨
PM2.5 13.2 µg/m³
53 Moderate
7:00 AM
💨
PM2.5 12.3 µg/m³
51 Moderate
8:00 AM
💨
PM2.5 12 µg/m³
50 Good
9:00 AM
💨
PM2.5 11.5 µg/m³
48 Good
10:00 AM
💨
PM2.5 10.9 µg/m³
45 Good
11:00 AM
💨
PM2.5 11.6 µg/m³
48 Good
12:00 PM
💨
PM2.5 11.1 µg/m³
78 Moderate
1:00 PM
💨
PM2.5 9.5 µg/m³
100 Moderate
2:00 PM
💨
PM2.5 8.5 µg/m³
106 Unhealthy for Sensitive Groups
Next few days daily max · US EPA AQI
Thu
💨
Unhealthy for Sensitive Groups · UV High
106
Fri
💨
Moderate · UV High
99
Sat
💨
Moderate · UV High
86
Sun
💨
Unhealthy for Sensitive Groups · UV High
129
Mon
💨
Moderate · UV Very high
69
JavaScript is needed for the map — the city links below work without it.
Precip NEXRAD · NOAA Temp Wind Clouds Terrain