Stay updated with real-time air quality in Mountlake Terrace, 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)
26
Good
Mountlake Terrace, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.24 μg/m³
0
55
155
255
425
605+
27.60 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
7.48 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Mountlake Terrace, Washington
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AQI 26
Good
1.54μg/m³
PM2.5
6.14μg/m³
PM10
27.80ppb
O3
0.31ppb
SO2
7.90ppb
NO2
0.23ppm
CO
AQI 25
Good
1.53μg/m³
PM2.5
6.08μg/m³
PM10
27.29ppb
O3
0.31ppb
SO2
6.41ppb
NO2
0.23ppm
CO
AQI 25
Good
1.48μg/m³
PM2.5
6.08μg/m³
PM10
27.44ppb
O3
0.31ppb
SO2
6.74ppb
NO2
0.23ppm
CO
AQI 26
Good
1.79μg/m³
PM2.5
6.98μg/m³
PM10
27.61ppb
O3
0.31ppb
SO2
8.43ppb
NO2
0.24ppm
CO
AQI 25
Good
1.48μg/m³
PM2.5
6.07μg/m³
PM10
27.44ppb
O3
0.31ppb
SO2
6.78ppb
NO2
0.23ppm
CO
AQI 26
Good
1.52μg/m³
PM2.5
6.14μg/m³
PM10
27.72ppb
O3
0.31ppb
SO2
7.66ppb
NO2
0.23ppm
CO
Air quality data and pollutant measurements for Washington, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Mountlake Terrace, Washington is updated every hour.
The worst air quality in Mountlake Terrace, Washington in the last 24 hours was observed at 03:00:00 on 2026-03-05.
In the last 24 hrs, the best air quality in Mountlake Terrace, Washington was observed at 05:00:00 on 2026-03-05.
The current air quality in Mountlake Terrace, Washington is 26, categorized as Good based on real-time data.
The most common pollutant in Mountlake Terrace, Washington is O3.
If the air quality in Mountlake Terrace, Washington is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Mountlake Terrace, Washington is 1.571 μg/m3.
The current PM10 concentration at Mountlake Terrace, Washington is 6.237 μg/m3.
The current carbon monoxide (CO) concentration at Mountlake Terrace, Washington is 0.234 ppm.
The current sulfur dioxide (SO2) concentration at Mountlake Terrace, Washington is 0.306 ppb.
The current ozone (O3) concentration at Mountlake Terrace, Washington is 27.601 ppm.
The current nitrogen dioxide (NO2) concentration at Mountlake Terrace, Washington is 7.479 ppb.
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