Stay updated with real-time air quality in Portland, 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)
43
Good
Portland, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.77 μg/m³
0
55
155
255
425
605+
45.81 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
4.81 ppb
0
54
101
361
1250
2050+
0.37 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portland, Texas
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AQI 41
Good
5.76μg/m³
PM2.5
29.10μg/m³
PM10
44.27ppb
O3
0.46ppb
SO2
2.82ppb
NO2
0.37ppm
CO
AQI 44
Good
2.60μg/m³
PM2.5
8.77μg/m³
PM10
48.49ppb
O3
0.46ppb
SO2
6.95ppb
NO2
0.37ppm
CO
AQI 40
Good
5.40μg/m³
PM2.5
28.57μg/m³
PM10
42.75ppb
O3
0.46ppb
SO2
5.23ppb
NO2
0.37ppm
CO
AQI 42
Good
3.34μg/m³
PM2.5
13.68μg/m³
PM10
45.47ppb
O3
0.46ppb
SO2
7.44ppb
NO2
0.37ppm
CO
AQI 41
Good
2.76μg/m³
PM2.5
17.95μg/m³
PM10
44.18ppb
O3
0.46ppb
SO2
6.06ppb
NO2
0.37ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
35.05μg/m³
PM10
24.79ppb
O3
0.30ppb
SO2
3.11ppb
NO2
0.16ppm
CO
Air quality measurements for Texas, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Portland, Texas is updated on an hourly basis.
The worst air quality in Portland, Texas was recorded at 02:00:00 on 2026-03-13.
The best air quality in Portland, Texas was recorded at 05:00:00 on 2026-03-12.
The real-time air quality index in Portland, Texas is 43, currently categorized as Good.
The most common pollutant in Portland, Texas is O3.
If the air quality in Portland, Texas is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Portland, Texas at present are 4.841 μg/m3.
The current PM10 levels in Portland, Texas are 26.765 μg/m3.
The current carbon monoxide (CO) level in Portland, Texas is 0.367 ppm.
The current sulfur dioxide (SO2) levels in Portland, Texas are 0.46 ppb.
The current ozone (O3) levels at Portland, Texas is 45.807 ppm.
The current nitrogen dioxide (NO2) levels at Portland, Texas is 4.809 ppb.
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