Stay updated with real-time air quality in Eureka, 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
Eureka, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.97 μg/m³
0
55
155
255
425
605+
41.06 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
3.62 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Eureka, Missouri
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AQI 38
Good
7.03μg/m³
PM2.5
15.16μg/m³
PM10
15.29ppb
O3
3.51ppb
SO2
1.38ppb
NO2
0.11ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
19.06μg/m³
PM10
20.87ppb
O3
2.97ppb
SO2
2.60ppb
NO2
0.11ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
19.06μg/m³
PM10
20.87ppb
O3
2.97ppb
SO2
2.60ppb
NO2
0.11ppm
CO
AQI 38
Good
6.50μg/m³
PM2.5
17.50μg/m³
PM10
21.30ppb
O3
3.16ppb
SO2
2.69ppb
NO2
0.11ppm
CO
AQI 33
Good
6.14μg/m³
PM2.5
16.71μg/m³
PM10
20.91ppb
O3
2.31ppb
SO2
2.06ppb
NO2
0.10ppm
CO
AQI 33
Good
6.46μg/m³
PM2.5
20.60μg/m³
PM10
20.21ppb
O3
2.16ppb
SO2
2.27ppb
NO2
0.10ppm
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 Eureka, Missouri is updated every hour for accuracy.
In the past 24 hours, the air quality in Eureka, Missouri was at its worst at 08:00:00 on 2025-07-20.
In the last 24 hours, the best air quality in Eureka, Missouri was observed at 06:00:00 on 2025-07-21.
As of now, the AQI in Eureka, Missouri is 38, indicating Good conditions.
Eureka, Missouri air has the highest levels of PM2.5.
Poor air quality in Eureka, Missouri means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Eureka, Missouri are currently 7.12 μg/m3.
The PM10 concentration in Eureka, Missouri is 15.047 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Eureka, Missouri is 0.111 ppm.
Currently, Eureka, Missouri has a sulfur dioxide (SO2) concentration of 3.717 ppb.
The current ozone (O3) level in Eureka, Missouri at the moment is 14.101 ppm.
Nitrogen dioxide (NO2) level in Eureka, Missouri at the moment is 1.279 ppb.
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