Stay updated with real-time air quality in Fort Lewis, 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)
30
Good
Fort Lewis, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.21 μg/m³
0
55
155
255
425
605+
32.10 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
3.02 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Fort Lewis, Washington
Fort Lewis, Washington
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AQI 28
Good
1.15μg/m³
PM2.5
4.95μg/m³
PM10
30.39ppb
O3
0.22ppb
SO2
6.07ppb
NO2
0.12ppm
CO
AQI 29
Good
1.06μg/m³
PM2.5
4.53μg/m³
PM10
30.58ppb
O3
0.22ppb
SO2
6.01ppb
NO2
0.12ppm
CO
AQI 29
Good
0.78μg/m³
PM2.5
3.26μg/m³
PM10
30.78ppb
O3
0.22ppb
SO2
6.02ppb
NO2
0.12ppm
CO
AQI 30
Good
1.49μg/m³
PM2.5
5.84μg/m³
PM10
32.46ppb
O3
0.22ppb
SO2
5.59ppb
NO2
0.14ppm
CO
AQI 28
Good
2.85μg/m³
PM2.5
16.50μg/m³
PM10
29.50ppb
O3
0.22ppb
SO2
5.12ppb
NO2
0.13ppm
CO
AQI 28
Good
1.38μg/m³
PM2.5
6.03μg/m³
PM10
30.11ppb
O3
0.22ppb
SO2
6.11ppb
NO2
0.12ppm
CO
The air quality data for Washington, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Fort Lewis, Washington are available every hour.
Fort Lewis, Washington experienced its worst air quality at 01:00:00, 2025-10-26.
The best air quality in Fort Lewis, Washington was observed at 03:00:00 on 2025-10-25.
The air quality in Fort Lewis, Washington right now is Good, with an AQI of 28.
In Fort Lewis, Washington, O3 is the most frequently found pollutant.
When air quality in Fort Lewis, Washington is compromised, staying indoors and wearing a mask can reduce health risks.
Fort Lewis, Washington currently has a PM2.5 concentration of 2.015 μg/m3.
Fort Lewis, Washington currently has a PM10 concentration of 10.533 μg/m3.
The current carbon monoxide (CO) level in Fort Lewis, Washington is 0.127 ppm.
The current sulfur dioxide (SO2) concentration in Fort Lewis, Washington is 0.221 ppb.
Fort Lewis, Washington currently has an ozone (O3) concentration of 29.697 ppm.
The current level of nitrogen dioxide (NO2) in Fort Lewis, Washington is 5.472 ppb.
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