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
5.1 µg/m³
WHO guideline 15
PM10
5.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 AM
💨
PM2.5 5.1 µg/m³
51Moderate
11:00 AM
💨
PM2.5 5.7 µg/m³
60Moderate
12:00 PM
💨
PM2.5 6.1 µg/m³
61Moderate
1:00 PM
💨
PM2.5 6.5 µg/m³
61Moderate
2:00 PM
💨
PM2.5 6.7 µg/m³
61Moderate
3:00 PM
💨
PM2.5 6.8 µg/m³
61Moderate
4:00 PM
💨
PM2.5 6.9 µg/m³
58Moderate
5:00 PM
💨
PM2.5 7.1 µg/m³
53Moderate
6:00 PM
💨
PM2.5 7.4 µg/m³
49Good
7:00 PM
💨
PM2.5 7.7 µg/m³
47Good
8:00 PM
💨
PM2.5 8.1 µg/m³
43Good
9:00 PM
💨
PM2.5 8.5 µg/m³
40Good
Next few days
daily max · US EPA AQI
Sat
💨
Moderate · UV Very high
61
Sun
💨
Moderate · UV Very high
66
Mon
💨
Moderate · UV Very high
68
Tue
💨
Good · UV Very high
45
Wed
💨
Good · UV Very high
31