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)
49
Good
Hannibal, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.84 μg/m³
0
55
155
255
425
605+
23.36 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
1.20 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Hannibal, Missouri
Hannibal, Missouri
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AQI 52
Moderate
9.79μg/m³
PM2.5
26.70μg/m³
PM10
39.00ppb
O3
1.01ppb
SO2
2.40ppb
NO2
0.23ppm
CO
AQI 43
Good
5.88μg/m³
PM2.5
28.07μg/m³
PM10
46.17ppb
O3
1.30ppb
SO2
1.83ppb
NO2
0.23ppm
CO
AQI 44
Good
5.99μg/m³
PM2.5
25.39μg/m³
PM10
47.34ppb
O3
1.23ppb
SO2
3.26ppb
NO2
0.24ppm
CO
AQI 40
Good
5.21μg/m³
PM2.5
31.53μg/m³
PM10
42.84ppb
O3
1.13ppb
SO2
3.41ppb
NO2
0.25ppm
CO
AQI 39
Good
6.84μg/m³
PM2.5
30.60μg/m³
PM10
42.21ppb
O3
1.05ppb
SO2
2.35ppb
NO2
0.26ppm
CO
AQI 28
Good
2.60μg/m³
PM2.5
10.98μg/m³
PM10
30.04ppb
O3
0.11ppb
SO2
1.42ppb
NO2
0.17ppm
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 11:00:00 on 2025-09-03.
The best air quality in Hannibal, Missouri was recorded at 01:00:00 on 2025-09-03.
The real-time air quality index in Hannibal, Missouri is 41, currently categorized as Good.
The most common pollutant in Hannibal, Missouri is O3.
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 6.432 μg/m3.
The current PM10 levels in Hannibal, Missouri are 29.369 μg/m3.
The current carbon monoxide (CO) level in Hannibal, Missouri is 0.234 ppm.
The current sulfur dioxide (SO2) levels in Hannibal, Missouri are 1.096 ppb.
The current ozone (O3) levels at Hannibal, Missouri is 43.712 ppm.
The current nitrogen dioxide (NO2) levels at Hannibal, Missouri is 2.229 ppb.
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