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
6.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.96 μg/m³
0
55
155
255
425
605+
33.86 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
0.64 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshall, Missouri
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AQI 49
Good
8.77μg/m³
PM2.5
38.70μg/m³
PM10
38.45ppb
O3
0.62ppb
SO2
0.64ppb
NO2
0.20ppm
CO
AQI 44
Good
7.85μg/m³
PM2.5
34.25μg/m³
PM10
38.56ppb
O3
0.66ppb
SO2
0.71ppb
NO2
0.20ppm
CO
AQI 36
Good
4.80μg/m³
PM2.5
24.21μg/m³
PM10
39.42ppb
O3
1.03ppb
SO2
1.31ppb
NO2
0.20ppm
CO
AQI 33
Good
6.46μg/m³
PM2.5
35.54μg/m³
PM10
35.89ppb
O3
0.95ppb
SO2
1.50ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.01μg/m³
PM2.5
37.02μg/m³
PM10
35.63ppb
O3
1.17ppb
SO2
4.34ppb
NO2
0.28ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
26.08μg/m³
PM10
31.70ppb
O3
1.17ppb
SO2
4.48ppb
NO2
0.27ppm
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 12:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Marshall, Missouri was observed at 12:00:00 on 2026-07-23.
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 6.796 μg/m3.
The PM10 concentration in Marshall, Missouri is 29.958 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshall, Missouri is 0.191 ppm.
Currently, Marshall, Missouri has a sulfur dioxide (SO2) concentration of 0.494 ppb.
The current ozone (O3) level in Marshall, Missouri at the moment is 33.857 ppm.
Nitrogen dioxide (NO2) level in Marshall, Missouri at the moment is 0.643 ppb.
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