Stay updated with real-time air quality in Snohomish, 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)
16
Good
Snohomish, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.38 μg/m³
0
55
155
255
425
605+
15.01 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
5.60 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Snohomish, Washington
Snohomish, Washington
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AQI 16
Good
3.43μg/m³
PM2.5
10.83μg/m³
PM10
12.14ppb
O3
0.29ppb
SO2
4.19ppb
NO2
0.11ppm
CO
AQI 14
Good
2.18μg/m³
PM2.5
8.05μg/m³
PM10
15.18ppb
O3
0.30ppb
SO2
4.93ppb
NO2
0.11ppm
CO
AQI 14
Good
2.14μg/m³
PM2.5
7.93μg/m³
PM10
15.07ppb
O3
0.30ppb
SO2
5.18ppb
NO2
0.11ppm
CO
AQI 14
Good
2.26μg/m³
PM2.5
8.62μg/m³
PM10
14.66ppb
O3
0.30ppb
SO2
5.54ppb
NO2
0.11ppm
CO
AQI 16
Good
3.41μg/m³
PM2.5
14.15μg/m³
PM10
13.54ppb
O3
0.29ppb
SO2
5.02ppb
NO2
0.11ppm
CO
AQI 22
Good
3.77μg/m³
PM2.5
9.25μg/m³
PM10
20.27ppb
O3
0.28ppb
SO2
3.11ppb
NO2
0.11ppm
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 Snohomish, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Snohomish, Washington was at its worst at 03:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in Snohomish, Washington was observed at 02:00:00 on 2026-06-07.
As of now, the AQI in Snohomish, Washington is 16, indicating Good conditions.
Snohomish, Washington air has the highest levels of PM2.5.
Poor air quality in Snohomish, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Snohomish, Washington are currently 3.292 μg/m3.
The PM10 concentration in Snohomish, Washington is 6.382 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Snohomish, Washington is 0.1 ppm.
Currently, Snohomish, Washington has a sulfur dioxide (SO2) concentration of 0.634 ppb.
The current ozone (O3) level in Snohomish, Washington at the moment is 15.007 ppm.
Nitrogen dioxide (NO2) level in Snohomish, Washington at the moment is 5.599 ppb.
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