Stay updated with real-time air quality in Lake Stevens, 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)
56
Moderate
Lake Stevens, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
64.99 μg/m³
0
55
155
255
425
605+
30.25 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
3.91 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Lake Stevens, Washington
Lake Stevens, Washington
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AQI 27
Good
4.68μg/m³
PM2.5
20.66μg/m³
PM10
24.93ppb
O3
0.32ppb
SO2
4.09ppb
NO2
0.16ppm
CO
AQI 23
Good
3.42μg/m³
PM2.5
15.96μg/m³
PM10
24.53ppb
O3
0.33ppb
SO2
4.16ppb
NO2
0.16ppm
CO
AQI 19
Good
2.17μg/m³
PM2.5
9.33μg/m³
PM10
21.08ppb
O3
0.33ppb
SO2
4.15ppb
NO2
0.16ppm
CO
AQI 22
Good
1.96μg/m³
PM2.5
9.84μg/m³
PM10
23.93ppb
O3
0.34ppb
SO2
4.21ppb
NO2
0.16ppm
CO
AQI 50
Good
7.37μg/m³
PM2.5
53.75μg/m³
PM10
29.49ppb
O3
0.33ppb
SO2
4.14ppb
NO2
0.16ppm
CO
AQI 56
Moderate
11.53μg/m³
PM2.5
55.71μg/m³
PM10
28.92ppb
O3
0.32ppb
SO2
3.92ppb
NO2
0.16ppm
CO
Air quality measurements for Washington, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Lake Stevens, Washington is updated on an hourly basis.
The worst air quality in Lake Stevens, Washington was recorded at 03:00:00 on 2026-07-23.
The best air quality in Lake Stevens, Washington was recorded at 09:00:00 on 2026-07-23.
The real-time air quality index in Lake Stevens, Washington is 56, currently categorized as Moderate.
The most common pollutant in Lake Stevens, Washington is PM10.
If the air quality in Lake Stevens, Washington is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Lake Stevens, Washington at present are 8.743 μg/m3.
The current PM10 levels in Lake Stevens, Washington are 64.992 μg/m3.
The current carbon monoxide (CO) level in Lake Stevens, Washington is 0.158 ppm.
The current sulfur dioxide (SO2) levels in Lake Stevens, Washington are 0.319 ppb.
The current ozone (O3) levels at Lake Stevens, Washington is 30.25 ppm.
The current nitrogen dioxide (NO2) levels at Lake Stevens, Washington is 3.912 ppb.
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