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)
64
Moderate
Port Arthur, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.01 μg/m³
0
55
155
255
425
605+
58.56 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
1.96 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Port Arthur, Texas
Port Arthur, Texas
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AQI 49
Good
8.87μg/m³
PM2.5
40.13μg/m³
PM10
52.99ppb
O3
0.84ppb
SO2
3.46ppb
NO2
0.31ppm
CO
AQI 47
Good
7.30μg/m³
PM2.5
39.01μg/m³
PM10
51.08ppb
O3
0.83ppb
SO2
3.46ppb
NO2
0.31ppm
CO
AQI 47
Good
7.80μg/m³
PM2.5
37.94μg/m³
PM10
51.21ppb
O3
0.84ppb
SO2
3.46ppb
NO2
0.31ppm
CO
AQI 54
Moderate
10.70μg/m³
PM2.5
35.70μg/m³
PM10
53.13ppb
O3
0.83ppb
SO2
3.44ppb
NO2
0.31ppm
CO
AQI 47
Good
6.97μg/m³
PM2.5
37.41μg/m³
PM10
51.12ppb
O3
0.83ppb
SO2
3.45ppb
NO2
0.30ppm
CO
AQI 52
Moderate
9.75μg/m³
PM2.5
42.19μg/m³
PM10
51.97ppb
O3
0.84ppb
SO2
3.42ppb
NO2
0.31ppm
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 02:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Port Arthur, Texas was observed at 08:00:00 on 2026-10-22.
The current air quality in Port Arthur, Texas is 64, categorized as Moderate based on real-time data.
The most common pollutant in Port Arthur, Texas is O3.
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 6.571 μg/m3.
The current PM10 concentration at Port Arthur, Texas is 29.011 μg/m3.
The current carbon monoxide (CO) concentration at Port Arthur, Texas is 0.307 ppm.
The current sulfur dioxide (SO2) concentration at Port Arthur, Texas is 0.801 ppb.
The current ozone (O3) concentration at Port Arthur, Texas is 58.562 ppm.
The current nitrogen dioxide (NO2) concentration at Port Arthur, Texas is 1.96 ppb.
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