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
1.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.89 μg/m³
0
55
155
255
425
605+
20.58 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
1.81 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Centralia, Washington
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AQI 23
Good
0.96μg/m³
PM2.5
3.87μg/m³
PM10
25.23ppb
O3
0.12ppb
SO2
2.92ppb
NO2
0.10ppm
CO
AQI 23
Good
0.95μg/m³
PM2.5
3.83μg/m³
PM10
25.27ppb
O3
0.12ppb
SO2
2.92ppb
NO2
0.10ppm
CO
AQI 22
Good
1.54μg/m³
PM2.5
8.02μg/m³
PM10
24.23ppb
O3
0.12ppb
SO2
3.04ppb
NO2
0.10ppm
CO
AQI 23
Good
1.00μg/m³
PM2.5
3.99μg/m³
PM10
25.04ppb
O3
0.12ppb
SO2
2.90ppb
NO2
0.10ppm
CO
AQI 23
Good
1.64μg/m³
PM2.5
8.09μg/m³
PM10
24.94ppb
O3
0.12ppb
SO2
3.27ppb
NO2
0.10ppm
CO
AQI 23
Good
1.54μg/m³
PM2.5
8.88μg/m³
PM10
25.00ppb
O3
0.10ppb
SO2
3.38ppb
NO2
0.10ppm
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 12:00:00 on 2026-03-08.
In the last 24 hours, the best air quality in Centralia, Washington was observed at 04:00:00 on 2026-03-07.
As of now, the AQI in Centralia, Washington is 19, 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 1.073 μg/m3.
The PM10 concentration in Centralia, Washington is 4.862 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Centralia, Washington is 0.1 ppm.
Currently, Centralia, Washington has a sulfur dioxide (SO2) concentration of 0.12 ppb.
The current ozone (O3) level in Centralia, Washington at the moment is 20.222 ppm.
Nitrogen dioxide (NO2) level in Centralia, Washington at the moment is 1.838 ppb.
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