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)
20
Good
Hannibal, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.64 μg/m³
0
55
155
255
425
605+
22.14 ppb
0
55
71
86
201
201+
2.76 ppb
0
36
76
186
605
1005+
1.92 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hannibal, Missouri
Hannibal, Missouri
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AQI 49
Good
8.98μg/m³
PM2.5
21.95μg/m³
PM10
15.16ppb
O3
0.56ppb
SO2
2.75ppb
NO2
0.20ppm
CO
AQI 44
Good
8.03μg/m³
PM2.5
24.52μg/m³
PM10
21.08ppb
O3
1.63ppb
SO2
3.32ppb
NO2
0.19ppm
CO
AQI 49
Good
9.48μg/m³
PM2.5
21.95μg/m³
PM10
15.45ppb
O3
1.74ppb
SO2
3.99ppb
NO2
0.20ppm
CO
AQI 49
Good
8.68μg/m³
PM2.5
19.05μg/m³
PM10
11.58ppb
O3
0.57ppb
SO2
3.01ppb
NO2
0.20ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
24.33μg/m³
PM10
21.05ppb
O3
1.87ppb
SO2
2.20ppb
NO2
0.18ppm
CO
AQI 44
Good
7.68μg/m³
PM2.5
34.00μg/m³
PM10
16.17ppb
O3
0.15ppb
SO2
5.91ppb
NO2
0.20ppm
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 01:00:00 on 2025-07-20.
The best air quality in Hannibal, Missouri was recorded at 07:00:00 on 2025-07-19.
The real-time air quality index in Hannibal, Missouri is 49, currently categorized as Good.
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 8.715 μg/m3.
The current PM10 levels in Hannibal, Missouri are 22.066 μg/m3.
The current carbon monoxide (CO) level in Hannibal, Missouri is 0.195 ppm.
The current sulfur dioxide (SO2) levels in Hannibal, Missouri are 1.587 ppb.
The current ozone (O3) levels at Hannibal, Missouri is 15.315 ppm.
The current nitrogen dioxide (NO2) levels at Hannibal, Missouri is 2.704 ppb.
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