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)
52
Moderate
Snohomish, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.65 μg/m³
0
55
155
255
425
605+
18.88 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
4.20 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Snohomish, Washington
Snohomish, Washington
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AQI 52
Moderate
10.32μg/m³
PM2.5
41.84μg/m³
PM10
18.45ppb
O3
0.42ppb
SO2
4.18ppb
NO2
0.13ppm
CO
AQI 17
Good
2.64μg/m³
PM2.5
12.76μg/m³
PM10
17.70ppb
O3
0.41ppb
SO2
3.95ppb
NO2
0.13ppm
CO
AQI 17
Good
2.58μg/m³
PM2.5
12.47μg/m³
PM10
17.93ppb
O3
0.41ppb
SO2
3.98ppb
NO2
0.13ppm
CO
AQI 17
Good
2.89μg/m³
PM2.5
13.71μg/m³
PM10
17.98ppb
O3
0.41ppb
SO2
4.01ppb
NO2
0.13ppm
CO
AQI 27
Good
4.91μg/m³
PM2.5
22.03μg/m³
PM10
16.28ppb
O3
0.40ppb
SO2
3.84ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.40μg/m³
PM2.5
48.74μg/m³
PM10
18.34ppb
O3
0.41ppb
SO2
4.81ppb
NO2
0.14ppm
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 10:00:00 on 2026-09-07.
In the last 24 hours, the best air quality in Snohomish, Washington was observed at 04:00:00 on 2026-09-07.
As of now, the AQI in Snohomish, Washington is 52, indicating Moderate 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 10.416 μg/m3.
The PM10 concentration in Snohomish, Washington is 40.654 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Snohomish, Washington is 0.13 ppm.
Currently, Snohomish, Washington has a sulfur dioxide (SO2) concentration of 0.414 ppb.
The current ozone (O3) level in Snohomish, Washington at the moment is 18.879 ppm.
Nitrogen dioxide (NO2) level in Snohomish, Washington at the moment is 4.197 ppb.
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