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
7.5 µg/m³
WHO guideline 15
PM10
7.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 AM
💨
PM2.5 7.5 µg/m³
31Good
2:00 AM
💨
PM2.5 7.2 µg/m³
30Good
3:00 AM
💨
PM2.5 6.9 µg/m³
29Good
4:00 AM
💨
PM2.5 6.7 µg/m³
28Good
5:00 AM
💨
PM2.5 6.7 µg/m³
28Good
6:00 AM
💨
PM2.5 6.7 µg/m³
28Good
7:00 AM
💨
PM2.5 6.9 µg/m³
29Good
8:00 AM
💨
PM2.5 7.2 µg/m³
30Good
9:00 AM
💨
PM2.5 7.9 µg/m³
35Good
10:00 AM
💨
PM2.5 8.2 µg/m³
43Good
11:00 AM
💨
PM2.5 8.2 µg/m³
47Good
12:00 PM
💨
PM2.5 8.7 µg/m³
50Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV Very high
60
Sat
💨
Moderate · UV Very high
68
Sun
💨
Moderate · UV Very high
71
Tue
💨
Good · UV Very high
49