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)
51
Moderate
Port Arthur, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.11 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
56.37 μg/m³
0
55
155
255
425
605+
29.35 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
1.86 ppb
0
54
101
361
1250
2050+
0.20 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 26
Good
2.21μg/m³
PM2.5
16.93μg/m³
PM10
28.50ppb
O3
0.67ppb
SO2
1.87ppb
NO2
0.20ppm
CO
AQI 66
Moderate
10.29μg/m³
PM2.5
85.86μg/m³
PM10
27.19ppb
O3
0.67ppb
SO2
1.83ppb
NO2
0.20ppm
CO
AQI 57
Moderate
8.14μg/m³
PM2.5
68.34μg/m³
PM10
28.43ppb
O3
0.67ppb
SO2
1.85ppb
NO2
0.20ppm
CO
AQI 58
Moderate
9.94μg/m³
PM2.5
70.19μg/m³
PM10
32.70ppb
O3
0.66ppb
SO2
1.90ppb
NO2
0.20ppm
CO
AQI 54
Moderate
11.01μg/m³
PM2.5
62.03μg/m³
PM10
25.42ppb
O3
0.67ppb
SO2
2.08ppb
NO2
0.20ppm
CO
AQI 52
Moderate
10.34μg/m³
PM2.5
49.93μg/m³
PM10
38.62ppb
O3
0.65ppb
SO2
1.96ppb
NO2
0.20ppm
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 2026-07-23.
In the last 24 hrs, the best air quality in Port Arthur, Texas was observed at 07:00:00 on 2026-07-23.
The current air quality in Port Arthur, Texas is 51, categorized as Moderate based on real-time data.
The most common pollutant in Port Arthur, Texas is PM10.
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 6.107 μg/m3.
The current PM10 concentration at Port Arthur, Texas is 56.368 μg/m3.
The current carbon monoxide (CO) concentration at Port Arthur, Texas is 0.201 ppm.
The current sulfur dioxide (SO2) concentration at Port Arthur, Texas is 0.668 ppb.
The current ozone (O3) concentration at Port Arthur, Texas is 29.354 ppm.
The current nitrogen dioxide (NO2) concentration at Port Arthur, Texas is 1.859 ppb.
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