Stay updated with real-time air quality in Dubuque, Iowa 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)
27
Good
Dubuque, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.23 μg/m³
0
55
155
255
425
605+
28.30 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
2.67 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Dubuque, Iowa
Dubuque, Iowa
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AQI 27
Good
5.08μg/m³
PM2.5
23.26μg/m³
PM10
28.18ppb
O3
0.50ppb
SO2
2.85ppb
NO2
0.12ppm
CO
AQI 26
Good
3.81μg/m³
PM2.5
17.06μg/m³
PM10
27.99ppb
O3
0.39ppb
SO2
2.46ppb
NO2
0.14ppm
CO
AQI 24
Good
4.50μg/m³
PM2.5
16.34μg/m³
PM10
26.13ppb
O3
0.69ppb
SO2
3.22ppb
NO2
0.13ppm
CO
AQI 29
Good
4.32μg/m³
PM2.5
18.29μg/m³
PM10
30.50ppb
O3
0.56ppb
SO2
3.09ppb
NO2
0.17ppm
CO
AQI 27
Good
5.11μg/m³
PM2.5
22.49μg/m³
PM10
18.01ppb
O3
0.25ppb
SO2
1.83ppb
NO2
0.15ppm
CO
AQI 27
Good
5.20μg/m³
PM2.5
23.00μg/m³
PM10
17.62ppb
O3
0.25ppb
SO2
1.82ppb
NO2
0.14ppm
CO
Air quality measurements for Iowa, 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 Dubuque, Iowa is updated on an hourly basis.
The worst air quality in Dubuque, Iowa was recorded at 04:00:00 on 2026-01-22.
The best air quality in Dubuque, Iowa was recorded at 03:00:00 on 2026-01-22.
The real-time air quality index in Dubuque, Iowa is 27, currently categorized as Good.
The most common pollutant in Dubuque, Iowa is PM2.5.
If the air quality in Dubuque, Iowa is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Dubuque, Iowa at present are 5.275 μg/m3.
The current PM10 levels in Dubuque, Iowa are 23.233 μg/m3.
The current carbon monoxide (CO) level in Dubuque, Iowa is 0.115 ppm.
The current sulfur dioxide (SO2) levels in Dubuque, Iowa are 0.445 ppb.
The current ozone (O3) levels at Dubuque, Iowa is 28.295 ppm.
The current nitrogen dioxide (NO2) levels at Dubuque, Iowa is 2.667 ppb.
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