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)
46
Good
St. Joseph, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.23 μg/m³
0
55
155
255
425
605+
48.64 ppb
0
55
71
86
201
201+
0.82 ppb
0
36
76
186
605
1005+
7.37 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
St. Joseph, Missouri
St. Joseph, Missouri
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AQI 47
Good
8.42μg/m³
PM2.5
38.46μg/m³
PM10
51.01ppb
O3
0.78ppb
SO2
8.26ppb
NO2
0.28ppm
CO
AQI 49
Good
8.55μg/m³
PM2.5
38.62μg/m³
PM10
52.65ppb
O3
1.00ppb
SO2
6.11ppb
NO2
0.32ppm
CO
AQI 49
Good
8.55μg/m³
PM2.5
39.05μg/m³
PM10
42.27ppb
O3
0.82ppb
SO2
7.45ppb
NO2
0.31ppm
CO
AQI 49
Good
8.69μg/m³
PM2.5
39.44μg/m³
PM10
44.45ppb
O3
0.86ppb
SO2
6.98ppb
NO2
0.32ppm
CO
AQI 44
Good
7.15μg/m³
PM2.5
31.58μg/m³
PM10
46.58ppb
O3
1.06ppb
SO2
6.40ppb
NO2
0.32ppm
CO
AQI 47
Good
7.90μg/m³
PM2.5
30.86μg/m³
PM10
51.11ppb
O3
0.71ppb
SO2
6.95ppb
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 12:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in St. Joseph, Missouri was observed at 03:00:00 on 2026-10-22.
As of now, the AQI in St. Joseph, Missouri is 46, 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 7.717 μg/m3.
The PM10 concentration in St. Joseph, Missouri is 50.226 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in St. Joseph, Missouri is 0.278 ppm.
Currently, St. Joseph, Missouri has a sulfur dioxide (SO2) concentration of 0.817 ppb.
The current ozone (O3) level in St. Joseph, Missouri at the moment is 48.639 ppm.
Nitrogen dioxide (NO2) level in St. Joseph, Missouri at the moment is 7.373 ppb.
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