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)
27
Good
Snohomish, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.49 μg/m³
0
55
155
255
425
605+
12.57 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
7.23 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Snohomish, Washington
Snohomish, Washington
Scroll To Air Quality MapLoading...
AQI 34
Good
6.45μg/m³
PM2.5
36.79μg/m³
PM10
9.14ppb
O3
0.55ppb
SO2
9.50ppb
NO2
0.25ppm
CO
AQI 27
Good
5.12μg/m³
PM2.5
16.32μg/m³
PM10
9.03ppb
O3
0.54ppb
SO2
9.53ppb
NO2
0.25ppm
CO
AQI 27
Good
4.84μg/m³
PM2.5
15.36μg/m³
PM10
9.04ppb
O3
0.56ppb
SO2
9.73ppb
NO2
0.25ppm
CO
AQI 27
Good
4.91μg/m³
PM2.5
16.84μg/m³
PM10
9.08ppb
O3
0.57ppb
SO2
9.90ppb
NO2
0.25ppm
CO
AQI 44
Good
7.57μg/m³
PM2.5
31.23μg/m³
PM10
9.19ppb
O3
0.51ppb
SO2
8.80ppb
NO2
0.25ppm
CO
AQI 49
Good
8.99μg/m³
PM2.5
41.89μg/m³
PM10
9.07ppb
O3
0.50ppb
SO2
7.85ppb
NO2
0.25ppm
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 2026-10-22.
In the last 24 hours, the best air quality in Snohomish, Washington was observed at 07:00:00 on 2026-10-22.
As of now, the AQI in Snohomish, Washington is 27, 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 4.689 μg/m3.
The PM10 concentration in Snohomish, Washington is 17.486 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Snohomish, Washington is 0.184 ppm.
Currently, Snohomish, Washington has a sulfur dioxide (SO2) concentration of 0.508 ppb.
The current ozone (O3) level in Snohomish, Washington at the moment is 12.571 ppm.
Nitrogen dioxide (NO2) level in Snohomish, Washington at the moment is 7.231 ppb.
All Rights Reserved © Ambee Inc. 2025