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)
44
Good
Fort Lewis, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.67 μg/m³
0
55
155
255
425
605+
22.58 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
2.78 ppb
0
54
101
361
1250
2050+
0.17 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 23
Good
1.86μg/m³
PM2.5
8.35μg/m³
PM10
24.85ppb
O3
0.34ppb
SO2
1.64ppb
NO2
0.16ppm
CO
AQI 24
Good
1.74μg/m³
PM2.5
7.77μg/m³
PM10
25.68ppb
O3
0.34ppb
SO2
1.85ppb
NO2
0.16ppm
CO
AQI 24
Good
1.49μg/m³
PM2.5
6.69μg/m³
PM10
26.43ppb
O3
0.34ppb
SO2
1.91ppb
NO2
0.16ppm
CO
AQI 24
Good
1.84μg/m³
PM2.5
14.41μg/m³
PM10
26.27ppb
O3
0.33ppb
SO2
2.88ppb
NO2
0.16ppm
CO
AQI 44
Good
7.69μg/m³
PM2.5
12.56μg/m³
PM10
21.30ppb
O3
0.34ppb
SO2
3.13ppb
NO2
0.17ppm
CO
AQI 22
Good
1.83μg/m³
PM2.5
8.17μg/m³
PM10
24.07ppb
O3
0.34ppb
SO2
1.52ppb
NO2
0.16ppm
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 02:00:00, 2026-07-23.
The best air quality in Fort Lewis, Washington was observed at 04:00:00 on 2026-07-23.
The air quality in Fort Lewis, Washington right now is Good, with an AQI of 44.
In Fort Lewis, Washington, PM2.5 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 7.968 μg/m3.
Fort Lewis, Washington currently has a PM10 concentration of 39.669 μg/m3.
The current carbon monoxide (CO) level in Fort Lewis, Washington is 0.165 ppm.
The current sulfur dioxide (SO2) concentration in Fort Lewis, Washington is 0.34 ppb.
Fort Lewis, Washington currently has an ozone (O3) concentration of 22.578 ppm.
The current level of nitrogen dioxide (NO2) in Fort Lewis, Washington is 2.778 ppb.
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