Stay updated with real-time air quality in Festus, 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)
33
Good
Festus, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.82 μg/m³
0
55
155
255
425
605+
23.79 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
9.78 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Festus, Missouri
Festus, Missouri
Scroll To Air Quality MapLoading...
AQI 38
Good
7.22μg/m³
PM2.5
31.79μg/m³
PM10
23.26ppb
O3
2.21ppb
SO2
9.62ppb
NO2
0.28ppm
CO
AQI 27
Good
5.08μg/m³
PM2.5
21.84μg/m³
PM10
22.20ppb
O3
2.11ppb
SO2
9.05ppb
NO2
0.27ppm
CO
AQI 49
Good
8.64μg/m³
PM2.5
37.92μg/m³
PM10
21.43ppb
O3
2.10ppb
SO2
10.33ppb
NO2
0.28ppm
CO
AQI 38
Good
6.73μg/m³
PM2.5
29.84μg/m³
PM10
20.81ppb
O3
2.08ppb
SO2
10.77ppb
NO2
0.29ppm
CO
AQI 49
Good
9.24μg/m³
PM2.5
40.92μg/m³
PM10
19.64ppb
O3
2.04ppb
SO2
10.75ppb
NO2
0.29ppm
CO
AQI 52
Moderate
10.08μg/m³
PM2.5
44.66μg/m³
PM10
18.02ppb
O3
2.01ppb
SO2
11.24ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Missouri, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Festus, Missouri is updated every hour.
The worst air quality in Festus, Missouri in the last 24 hours was observed at 11:00:00 on 2025-08-28.
In the last 24 hrs, the best air quality in Festus, Missouri was observed at 09:00:00 on 2025-08-28.
The current air quality in Festus, Missouri is 22, categorized as Good based on real-time data.
The most common pollutant in Festus, Missouri is PM2.5.
If the air quality in Festus, Missouri is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Festus, Missouri is 3.83 μg/m3.
The current PM10 concentration at Festus, Missouri is 16.715 μg/m3.
The current carbon monoxide (CO) concentration at Festus, Missouri is 0.247 ppm.
The current sulfur dioxide (SO2) concentration at Festus, Missouri is 1.805 ppb.
The current ozone (O3) concentration at Festus, Missouri is 22.038 ppm.
The current nitrogen dioxide (NO2) concentration at Festus, Missouri is 6.649 ppb.
All Rights Reserved © Ambee Inc. 2025