Stay updated with real-time air quality in Fort Smith, Arkansas 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)
29
Good
Fort Smith, Arkansas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.60 μg/m³
0
55
155
255
425
605+
31.43 ppb
0
55
71
86
201
201+
1.18 ppb
0
36
76
186
605
1005+
6.76 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Fort Smith, Arkansas
Fort Smith, Arkansas
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AQI 31
Good
4.15μg/m³
PM2.5
30.02μg/m³
PM10
33.37ppb
O3
1.19ppb
SO2
6.65ppb
NO2
0.25ppm
CO
AQI 38
Good
7.40μg/m³
PM2.5
33.35μg/m³
PM10
35.92ppb
O3
1.13ppb
SO2
5.66ppb
NO2
0.24ppm
CO
AQI 36
Good
4.34μg/m³
PM2.5
23.51μg/m³
PM10
38.96ppb
O3
1.25ppb
SO2
5.58ppb
NO2
0.26ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
29.83μg/m³
PM10
36.68ppb
O3
1.18ppb
SO2
5.54ppb
NO2
0.25ppm
CO
AQI 31
Good
0.94μg/m³
PM2.5
4.38μg/m³
PM10
33.40ppb
O3
1.28ppb
SO2
5.49ppb
NO2
0.26ppm
CO
AQI 38
Good
7.26μg/m³
PM2.5
32.12μg/m³
PM10
29.22ppb
O3
0.52ppb
SO2
4.93ppb
NO2
0.21ppm
CO
Air quality measurements for Arkansas, 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 Fort Smith, Arkansas is updated on an hourly basis.
The worst air quality in Fort Smith, Arkansas was recorded at 06:00:00 on 2026-01-22.
The best air quality in Fort Smith, Arkansas was recorded at 07:00:00 on 2026-01-22.
The real-time air quality index in Fort Smith, Arkansas is 29, currently categorized as Good.
The most common pollutant in Fort Smith, Arkansas is O3.
If the air quality in Fort Smith, Arkansas is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Fort Smith, Arkansas at present are 4.127 μg/m3.
The current PM10 levels in Fort Smith, Arkansas are 23.602 μg/m3.
The current carbon monoxide (CO) level in Fort Smith, Arkansas is 0.248 ppm.
The current sulfur dioxide (SO2) levels in Fort Smith, Arkansas are 1.184 ppb.
The current ozone (O3) levels at Fort Smith, Arkansas is 31.428 ppm.
The current nitrogen dioxide (NO2) levels at Fort Smith, Arkansas is 6.76 ppb.
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