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)
15
Good
Centralia, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.27 μg/m³
0
55
155
255
425
605+
15.66 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
3.60 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Centralia, Washington
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AQI 16
Good
3.07μg/m³
PM2.5
13.71μg/m³
PM10
15.10ppb
O3
0.50ppb
SO2
8.50ppb
NO2
0.23ppm
CO
AQI 16
Good
3.08μg/m³
PM2.5
13.75μg/m³
PM10
15.10ppb
O3
0.50ppb
SO2
8.52ppb
NO2
0.23ppm
CO
AQI 14
Good
1.14μg/m³
PM2.5
4.99μg/m³
PM10
15.07ppb
O3
0.50ppb
SO2
3.43ppb
NO2
0.23ppm
CO
AQI 16
Good
3.10μg/m³
PM2.5
13.99μg/m³
PM10
15.01ppb
O3
0.50ppb
SO2
8.81ppb
NO2
0.23ppm
CO
AQI 16
Good
2.50μg/m³
PM2.5
11.71μg/m³
PM10
15.84ppb
O3
0.52ppb
SO2
12.34ppb
NO2
0.24ppm
CO
AQI 22
Good
3.97μg/m³
PM2.5
14.53μg/m³
PM10
17.76ppb
O3
0.52ppb
SO2
12.78ppb
NO2
0.25ppm
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 01:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in Centralia, Washington was observed at 03:00:00 on 2026-06-08.
As of now, the AQI in Centralia, Washington is 15, 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 2.159 μg/m3.
The PM10 concentration in Centralia, Washington is 9.27 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Centralia, Washington is 0.214 ppm.
Currently, Centralia, Washington has a sulfur dioxide (SO2) concentration of 0.484 ppb.
The current ozone (O3) level in Centralia, Washington at the moment is 15.658 ppm.
Nitrogen dioxide (NO2) level in Centralia, Washington at the moment is 3.604 ppb.
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