Stay updated with real-time air quality in Hannibal, Missouri 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)
54
Moderate
Hannibal, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
56.51 μg/m³
0
55
155
255
425
605+
20.41 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
2.00 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hannibal, Missouri
Hannibal, Missouri
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AQI 44
Good
8.09μg/m³
PM2.5
42.88μg/m³
PM10
18.43ppb
O3
0.48ppb
SO2
1.85ppb
NO2
0.15ppm
CO
AQI 38
Good
7.24μg/m³
PM2.5
21.20μg/m³
PM10
21.46ppb
O3
0.78ppb
SO2
1.88ppb
NO2
0.15ppm
CO
AQI 14
Good
0.36μg/m³
PM2.5
1.20μg/m³
PM10
15.11ppb
O3
0.18ppb
SO2
1.55ppb
NO2
0.17ppm
CO
AQI 13
Good
1.51μg/m³
PM2.5
6.00μg/m³
PM10
13.64ppb
O3
0.17ppb
SO2
1.22ppb
NO2
0.15ppm
CO
AQI 17
Good
0.96μg/m³
PM2.5
4.00μg/m³
PM10
18.09ppb
O3
0.16ppb
SO2
1.30ppb
NO2
0.15ppm
CO
AQI 14
Good
1.94μg/m³
PM2.5
8.00μg/m³
PM10
15.01ppb
O3
0.13ppb
SO2
1.20ppb
NO2
0.15ppm
CO
Air quality measurements for Missouri, 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 Hannibal, Missouri is updated on an hourly basis.
The worst air quality in Hannibal, Missouri was recorded at 12:00:00 on 2025-12-13.
The best air quality in Hannibal, Missouri was recorded at 09:00:00 on 2025-12-13.
The real-time air quality index in Hannibal, Missouri is 54, currently categorized as Moderate.
The most common pollutant in Hannibal, Missouri is PM2.5.
If the air quality in Hannibal, Missouri is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hannibal, Missouri at present are 11.179 μg/m3.
The current PM10 levels in Hannibal, Missouri are 56.508 μg/m3.
The current carbon monoxide (CO) level in Hannibal, Missouri is 0.153 ppm.
The current sulfur dioxide (SO2) levels in Hannibal, Missouri are 0.391 ppb.
The current ozone (O3) levels at Hannibal, Missouri is 20.406 ppm.
The current nitrogen dioxide (NO2) levels at Hannibal, Missouri is 2.002 ppb.
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