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)
38
Good
Marshall, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.88 μg/m³
0
55
155
255
425
605+
27.23 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
1.31 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshall, Missouri
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AQI 33
Good
6.45μg/m³
PM2.5
29.00μg/m³
PM10
34.01ppb
O3
0.21ppb
SO2
1.09ppb
NO2
0.13ppm
CO
AQI 34
Good
4.68μg/m³
PM2.5
20.18μg/m³
PM10
36.60ppb
O3
0.28ppb
SO2
1.24ppb
NO2
0.14ppm
CO
AQI 40
Good
5.89μg/m³
PM2.5
28.38μg/m³
PM10
43.00ppb
O3
0.30ppb
SO2
2.92ppb
NO2
0.27ppm
CO
AQI 38
Good
7.00μg/m³
PM2.5
37.41μg/m³
PM10
41.20ppb
O3
0.56ppb
SO2
3.04ppb
NO2
0.27ppm
CO
AQI 41
Good
5.79μg/m³
PM2.5
22.17μg/m³
PM10
43.74ppb
O3
0.29ppb
SO2
8.52ppb
NO2
0.33ppm
CO
AQI 42
Good
6.77μg/m³
PM2.5
32.98μg/m³
PM10
45.48ppb
O3
0.29ppb
SO2
7.93ppb
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 11:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Marshall, Missouri was observed at 01:00:00 on 2026-03-09.
As of now, the AQI in Marshall, Missouri is 38, indicating Good conditions.
Marshall, Missouri air has the highest levels of PM2.5.
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 6.522 μg/m3.
The PM10 concentration in Marshall, Missouri is 28.876 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshall, Missouri is 0.139 ppm.
Currently, Marshall, Missouri has a sulfur dioxide (SO2) concentration of 0.263 ppb.
The current ozone (O3) level in Marshall, Missouri at the moment is 27.225 ppm.
Nitrogen dioxide (NO2) level in Marshall, Missouri at the moment is 1.314 ppb.
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