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)
24
Good
Festus, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.38 μg/m³
0
55
155
255
425
605+
26.15 ppb
0
55
71
86
201
201+
0.25 ppb
0
36
76
186
605
1005+
4.13 ppb
0
54
101
361
1250
2050+
0.19 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 25
Good
1.44μg/m³
PM2.5
14.82μg/m³
PM10
26.89ppb
O3
0.53ppb
SO2
2.68ppb
NO2
0.24ppm
CO
AQI 23
Good
3.30μg/m³
PM2.5
17.76μg/m³
PM10
24.83ppb
O3
0.54ppb
SO2
4.91ppb
NO2
0.23ppm
CO
AQI 24
Good
1.91μg/m³
PM2.5
11.79μg/m³
PM10
25.60ppb
O3
0.48ppb
SO2
4.74ppb
NO2
0.25ppm
CO
AQI 23
Good
2.58μg/m³
PM2.5
12.75μg/m³
PM10
25.05ppb
O3
0.42ppb
SO2
5.00ppb
NO2
0.24ppm
CO
AQI 24
Good
1.83μg/m³
PM2.5
12.26μg/m³
PM10
25.84ppb
O3
0.48ppb
SO2
4.37ppb
NO2
0.25ppm
CO
AQI 23
Good
2.10μg/m³
PM2.5
10.22μg/m³
PM10
25.10ppb
O3
0.45ppb
SO2
5.28ppb
NO2
0.25ppm
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 09:00:00 on 2025-10-21.
In the last 24 hrs, the best air quality in Festus, Missouri was observed at 08:00:00 on 2025-10-22.
The current air quality in Festus, Missouri is 24, categorized as Good based on real-time data.
The most common pollutant in Festus, Missouri is O3.
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 2.208 μg/m3.
The current PM10 concentration at Festus, Missouri is 16.381 μg/m3.
The current carbon monoxide (CO) concentration at Festus, Missouri is 0.188 ppm.
The current sulfur dioxide (SO2) concentration at Festus, Missouri is 0.249 ppb.
The current ozone (O3) concentration at Festus, Missouri is 26.153 ppm.
The current nitrogen dioxide (NO2) concentration at Festus, Missouri is 4.129 ppb.
All Rights Reserved © Ambee Inc. 2025