Stay updated with real-time air quality in Marshall, 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)
32
Good
Marshall, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.64 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.00 μg/m³
0
55
155
255
425
605+
35.01 ppb
0
55
71
86
201
201+
0.13 ppb
0
36
76
186
605
1005+
1.24 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshall, Missouri
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AQI 32
Good
4.16μg/m³
PM2.5
18.00μg/m³
PM10
35.21ppb
O3
0.10ppb
SO2
1.05ppb
NO2
0.11ppm
CO
AQI 34
Good
3.91μg/m³
PM2.5
17.19μg/m³
PM10
37.11ppb
O3
0.14ppb
SO2
1.35ppb
NO2
0.11ppm
CO
AQI 27
Good
5.07μg/m³
PM2.5
19.68μg/m³
PM10
18.82ppb
O3
0.68ppb
SO2
3.76ppb
NO2
0.27ppm
CO
AQI 27
Good
4.67μg/m³
PM2.5
23.05μg/m³
PM10
19.74ppb
O3
0.72ppb
SO2
3.62ppb
NO2
0.26ppm
CO
AQI 27
Good
4.62μg/m³
PM2.5
22.07μg/m³
PM10
24.37ppb
O3
0.49ppb
SO2
8.36ppb
NO2
0.34ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
28.09μg/m³
PM10
17.41ppb
O3
0.48ppb
SO2
7.17ppb
NO2
0.32ppm
CO
Air quality and pollutant data for Missouri, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Marshall, Missouri is updated every hour for accuracy.
In the past 24 hours, the air quality in Marshall, Missouri was at its worst at 02:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in Marshall, Missouri was observed at 01:00:00 on 2026-06-07.
As of now, the AQI in Marshall, Missouri is 32, indicating Good conditions.
Marshall, Missouri air has the highest levels of O3.
Poor air quality in Marshall, Missouri means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Marshall, Missouri are currently 3.638 μg/m3.
The PM10 concentration in Marshall, Missouri is 16 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshall, Missouri is 0.116 ppm.
Currently, Marshall, Missouri has a sulfur dioxide (SO2) concentration of 0.132 ppb.
The current ozone (O3) level in Marshall, Missouri at the moment is 35.008 ppm.
Nitrogen dioxide (NO2) level in Marshall, Missouri at the moment is 1.24 ppb.
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