Air quality in Port Arthur
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
11.1 µg/m³
WHO guideline 15
PM10
14.3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 PM
💨
PM2.5 11.1 µg/m³
46Good
10:00 PM
💨
PM2.5 12.2 µg/m³
51Moderate
11:00 PM
💨
PM2.5 13.8 µg/m³
55Moderate
12:00 AM
💨
PM2.5 13.3 µg/m³
54Moderate
1:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
2:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
3:00 AM
💨
PM2.5 13.3 µg/m³
54Moderate
4:00 AM
💨
PM2.5 14.7 µg/m³
56Moderate
5:00 AM
💨
PM2.5 16.4 µg/m³
60Moderate
6:00 AM
💨
PM2.5 18.2 µg/m³
64Moderate
7:00 AM
💨
PM2.5 20.7 µg/m³
69Moderate
8:00 AM
💨
PM2.5 16 µg/m³
59Moderate
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV Moderate
59
Thu
💨
Moderate · UV High
69
Fri
💨
Moderate · UV Very high
64
Sat
💨
Moderate · UV Very high
68
Sun
💨
Moderate · UV Very high
55