Stay updated with real-time air quality in Port Arthur, Texas featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
16
Good
Port Arthur, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.10 μg/m³
0
55
155
255
425
605+
17.47 ppb
0
55
71
86
201
201+
0.85 ppb
0
36
76
186
605
1005+
2.18 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Port Arthur, Texas
Port Arthur, Texas
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AQI 11
Good
1.77μg/m³
PM2.5
7.65μg/m³
PM10
8.56ppb
O3
0.71ppb
SO2
4.60ppb
NO2
0.29ppm
CO
AQI 16
Good
3.47μg/m³
PM2.5
16.86μg/m³
PM10
7.78ppb
O3
0.71ppb
SO2
4.40ppb
NO2
0.29ppm
CO
AQI 16
Good
2.99μg/m³
PM2.5
14.23μg/m³
PM10
7.40ppb
O3
0.71ppb
SO2
4.50ppb
NO2
0.29ppm
CO
AQI 22
Good
4.11μg/m³
PM2.5
16.47μg/m³
PM10
7.05ppb
O3
0.71ppb
SO2
4.45ppb
NO2
0.29ppm
CO
AQI 27
Good
4.56μg/m³
PM2.5
19.30μg/m³
PM10
10.87ppb
O3
0.71ppb
SO2
4.19ppb
NO2
0.29ppm
CO
AQI 22
Good
4.28μg/m³
PM2.5
17.55μg/m³
PM10
9.10ppb
O3
0.70ppb
SO2
4.55ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Texas, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Port Arthur, Texas is updated every hour.
The worst air quality in Port Arthur, Texas in the last 24 hours was observed at 07:00:00 on 2026-08-11.
In the last 24 hrs, the best air quality in Port Arthur, Texas was observed at 10:00:00 on 2026-08-12.
The current air quality in Port Arthur, Texas is 11, categorized as Good based on real-time data.
The most common pollutant in Port Arthur, Texas is PM2.5.
If the air quality in Port Arthur, Texas is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Port Arthur, Texas is 1.846 μg/m3.
The current PM10 concentration at Port Arthur, Texas is 10.251 μg/m3.
The current carbon monoxide (CO) concentration at Port Arthur, Texas is 0.309 ppm.
The current sulfur dioxide (SO2) concentration at Port Arthur, Texas is 0.717 ppb.
The current ozone (O3) concentration at Port Arthur, Texas is 4.275 ppm.
The current nitrogen dioxide (NO2) concentration at Port Arthur, Texas is 5.043 ppb.
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