Stay updated with real-time air quality in Centralia, Washington 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)
19
Good
Centralia, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.01 μg/m³
0
55
155
255
425
605+
21.10 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
7.02 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Centralia, Washington
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AQI 23
Good
1.28μg/m³
PM2.5
5.61μg/m³
PM10
25.07ppb
O3
0.34ppb
SO2
13.54ppb
NO2
0.14ppm
CO
AQI 23
Good
1.28μg/m³
PM2.5
5.60μg/m³
PM10
25.05ppb
O3
0.34ppb
SO2
13.55ppb
NO2
0.14ppm
CO
AQI 27
Good
5.22μg/m³
PM2.5
19.34μg/m³
PM10
23.29ppb
O3
0.33ppb
SO2
11.77ppb
NO2
0.14ppm
CO
AQI 24
Good
0.78μg/m³
PM2.5
3.35μg/m³
PM10
25.62ppb
O3
0.34ppb
SO2
13.38ppb
NO2
0.14ppm
CO
AQI 27
Good
5.09μg/m³
PM2.5
20.74μg/m³
PM10
20.82ppb
O3
0.33ppb
SO2
15.24ppb
NO2
0.14ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
30.54μg/m³
PM10
29.72ppb
O3
0.32ppb
SO2
16.09ppb
NO2
0.14ppm
CO
Air quality and pollutant data for Washington, 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 Centralia, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Centralia, Washington was at its worst at 10:00:00 on 2025-10-24.
In the last 24 hours, the best air quality in Centralia, Washington was observed at 04:00:00 on 2025-10-24.
As of now, the AQI in Centralia, Washington is 22, indicating Good conditions.
Centralia, Washington air has the highest levels of O3.
Poor air quality in Centralia, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Centralia, Washington are currently 3.268 μg/m3.
The PM10 concentration in Centralia, Washington is 14.826 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Centralia, Washington is 0.126 ppm.
Currently, Centralia, Washington has a sulfur dioxide (SO2) concentration of 0.343 ppb.
The current ozone (O3) level in Centralia, Washington at the moment is 24.352 ppm.
Nitrogen dioxide (NO2) level in Centralia, Washington at the moment is 11.41 ppb.
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