Stay updated with real-time air quality in St. Joseph, 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)
50
Good
St. Joseph, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
54.48 μg/m³
0
55
155
255
425
605+
38.84 ppb
0
55
71
86
201
201+
0.98 ppb
0
36
76
186
605
1005+
6.79 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
St. Joseph, Missouri
St. Joseph, Missouri
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AQI 38
Good
6.72μg/m³
PM2.5
39.72μg/m³
PM10
32.34ppb
O3
0.90ppb
SO2
8.36ppb
NO2
0.25ppm
CO
AQI 44
Good
7.82μg/m³
PM2.5
30.30μg/m³
PM10
32.54ppb
O3
1.03ppb
SO2
8.17ppb
NO2
0.27ppm
CO
AQI 44
Good
7.74μg/m³
PM2.5
29.22μg/m³
PM10
29.08ppb
O3
0.98ppb
SO2
8.65ppb
NO2
0.27ppm
CO
AQI 44
Good
7.62μg/m³
PM2.5
28.82μg/m³
PM10
29.76ppb
O3
1.00ppb
SO2
8.52ppb
NO2
0.27ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
33.61μg/m³
PM10
32.27ppb
O3
1.02ppb
SO2
8.14ppb
NO2
0.27ppm
CO
AQI 33
Good
6.09μg/m³
PM2.5
26.53μg/m³
PM10
33.32ppb
O3
0.67ppb
SO2
7.27ppb
NO2
0.24ppm
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 St. Joseph, Missouri is updated every hour for accuracy.
In the past 24 hours, the air quality in St. Joseph, Missouri was at its worst at 02:00:00 on 2026-08-11.
In the last 24 hours, the best air quality in St. Joseph, Missouri was observed at 06:00:00 on 2026-08-11.
As of now, the AQI in St. Joseph, Missouri is 47, indicating Good conditions.
St. Joseph, Missouri air has the highest levels of PM10.
Poor air quality in St. Joseph, Missouri means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in St. Joseph, Missouri are currently 7.979 μg/m3.
The PM10 concentration in St. Joseph, Missouri is 50.571 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in St. Joseph, Missouri is 0.253 ppm.
Currently, St. Joseph, Missouri has a sulfur dioxide (SO2) concentration of 0.826 ppb.
The current ozone (O3) level in St. Joseph, Missouri at the moment is 32.558 ppm.
Nitrogen dioxide (NO2) level in St. Joseph, Missouri at the moment is 7.913 ppb.
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