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)
38
Good
Fort Smith, Arkansas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.76 μg/m³
0
55
155
255
425
605+
24.08 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
4.64 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Fort Smith, Arkansas
Fort Smith, Arkansas
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AQI 27
Good
5.14μg/m³
PM2.5
21.93μg/m³
PM10
28.57ppb
O3
0.24ppb
SO2
1.17ppb
NO2
0.13ppm
CO
AQI 34
Good
4.87μg/m³
PM2.5
21.00μg/m³
PM10
36.52ppb
O3
0.14ppb
SO2
0.98ppb
NO2
0.13ppm
CO
AQI 54
Moderate
11.39μg/m³
PM2.5
50.47μg/m³
PM10
28.20ppb
O3
0.21ppb
SO2
1.06ppb
NO2
0.12ppm
CO
AQI 38
Good
7.43μg/m³
PM2.5
32.55μg/m³
PM10
34.61ppb
O3
0.18ppb
SO2
1.05ppb
NO2
0.13ppm
CO
AQI 56
Moderate
12.32μg/m³
PM2.5
55.40μg/m³
PM10
36.99ppb
O3
0.20ppb
SO2
1.07ppb
NO2
0.13ppm
CO
AQI 33
Good
5.89μg/m³
PM2.5
26.00μg/m³
PM10
34.89ppb
O3
0.11ppb
SO2
1.02ppb
NO2
0.13ppm
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 09:00:00 on 2026-04-23.
The best air quality in Fort Smith, Arkansas was recorded at 03:00:00 on 2026-04-24.
The real-time air quality index in Fort Smith, Arkansas is 38, currently categorized as Good.
The most common pollutant in Fort Smith, Arkansas is PM2.5.
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 6.887 μg/m3.
The current PM10 levels in Fort Smith, Arkansas are 26.757 μg/m3.
The current carbon monoxide (CO) level in Fort Smith, Arkansas is 0.33 ppm.
The current sulfur dioxide (SO2) levels in Fort Smith, Arkansas are 0.367 ppb.
The current ozone (O3) levels at Fort Smith, Arkansas is 24.08 ppm.
The current nitrogen dioxide (NO2) levels at Fort Smith, Arkansas is 4.636 ppb.
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