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
4.1 µg/m³
WHO guideline 15
PM10
4.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 4.1 µg/m³
17Good
9:00 AM
💨
PM2.5 3.8 µg/m³
16Good
10:00 AM
💨
PM2.5 3.5 µg/m³
15Good
11:00 AM
💨
PM2.5 2.9 µg/m³
16Good
12:00 PM
💨
PM2.5 2.3 µg/m³
20Good
1:00 PM
💨
PM2.5 1.9 µg/m³
25Good
2:00 PM
💨
PM2.5 1.7 µg/m³
27Good
3:00 PM
💨
PM2.5 1.6 µg/m³
28Good
4:00 PM
💨
PM2.5 1.6 µg/m³
28Good
5:00 PM
💨
PM2.5 1.6 µg/m³
27Good
6:00 PM
💨
PM2.5 1.7 µg/m³
26Good
7:00 PM
💨
PM2.5 1.9 µg/m³
24Good
Next few days
daily max · US EPA AQI
Mon
💨
Good · UV Moderate
28
Wed
💨
Good · UV Moderate
31
Fri
💨
Good · UV Moderate
17