Stay updated with real-time air quality in Duncan, Oklahoma 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)
39
Good
Duncan, Oklahoma
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.74 μg/m³
0
55
155
255
425
605+
42.33 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
8.13 ppb
0
54
101
361
1250
2050+
0.43 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Duncan, Oklahoma
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AQI 37
Good
4.30μg/m³
PM2.5
15.96μg/m³
PM10
40.02ppb
O3
0.66ppb
SO2
8.24ppb
NO2
0.43ppm
CO
AQI 40
Good
3.38μg/m³
PM2.5
16.88μg/m³
PM10
43.12ppb
O3
0.67ppb
SO2
8.52ppb
NO2
0.48ppm
CO
AQI 30
Good
5.32μg/m³
PM2.5
22.21μg/m³
PM10
32.30ppb
O3
0.21ppb
SO2
1.73ppb
NO2
0.17ppm
CO
AQI 31
Good
4.95μg/m³
PM2.5
21.13μg/m³
PM10
33.93ppb
O3
0.19ppb
SO2
1.36ppb
NO2
0.15ppm
CO
AQI 37
Good
5.18μg/m³
PM2.5
11.05μg/m³
PM10
39.77ppb
O3
0.61ppb
SO2
7.89ppb
NO2
0.40ppm
CO
AQI 39
Good
3.47μg/m³
PM2.5
10.98μg/m³
PM10
41.77ppb
O3
0.67ppb
SO2
9.78ppb
NO2
0.52ppm
CO
The air quality data for Oklahoma, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Duncan, Oklahoma are available every hour.
Duncan, Oklahoma experienced its worst air quality at 12:00:00, 2026-03-13.
The best air quality in Duncan, Oklahoma was observed at 02:00:00 on 2026-03-12.
The air quality in Duncan, Oklahoma right now is Good, with an AQI of 39.
In Duncan, Oklahoma, O3 is the most frequently found pollutant.
When air quality in Duncan, Oklahoma is compromised, staying indoors and wearing a mask can reduce health risks.
Duncan, Oklahoma currently has a PM2.5 concentration of 3.974 μg/m3.
Duncan, Oklahoma currently has a PM10 concentration of 10.74 μg/m3.
The current carbon monoxide (CO) level in Duncan, Oklahoma is 0.435 ppm.
The current sulfur dioxide (SO2) concentration in Duncan, Oklahoma is 0.643 ppb.
Duncan, Oklahoma currently has an ozone (O3) concentration of 42.327 ppm.
The current level of nitrogen dioxide (NO2) in Duncan, Oklahoma is 8.127 ppb.
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