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

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.36 μg/m³
0
55
155
255
425
605+
29.04 ppb
0
55
71
86
201
201+
0.10 ppb
0
36
76
186
605
1005+
4.11 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Issaquah, Washington
Issaquah, Washington
Scroll To Air Quality MapLoading...
AQI 31
Good
1.56μg/m³
PM2.5
7.14μg/m³
PM10
32.74ppb
O3
0.10ppb
SO2
3.84ppb
NO2
0.10ppm
CO
AQI 31
Good
1.40μg/m³
PM2.5
6.40μg/m³
PM10
32.73ppb
O3
0.10ppb
SO2
3.75ppb
NO2
0.10ppm
CO
AQI 31
Good
1.09μg/m³
PM2.5
4.87μg/m³
PM10
32.54ppb
O3
0.10ppb
SO2
3.82ppb
NO2
0.10ppm
CO
AQI 31
Good
2.12μg/m³
PM2.5
9.32μg/m³
PM10
32.59ppb
O3
0.10ppb
SO2
3.72ppb
NO2
0.10ppm
CO
AQI 31
Good
2.31μg/m³
PM2.5
9.55μg/m³
PM10
32.77ppb
O3
0.10ppb
SO2
3.74ppb
NO2
0.10ppm
CO
AQI 31
Good
1.77μg/m³
PM2.5
6.97μg/m³
PM10
32.71ppb
O3
0.10ppb
SO2
4.10ppb
NO2
0.10ppm
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 Issaquah, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Issaquah, Washington was at its worst at 11:00:00 on 2026-06-03.
In the last 24 hours, the best air quality in Issaquah, Washington was observed at 11:00:00 on 2026-06-03.
As of now, the AQI in Issaquah, Washington is 27, indicating Good conditions.
Issaquah, Washington air has the highest levels of O3.
Poor air quality in Issaquah, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Issaquah, Washington are currently 1.981 μg/m3.
The PM10 concentration in Issaquah, Washington is 8.364 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Issaquah, Washington is 0.1 ppm.
Currently, Issaquah, Washington has a sulfur dioxide (SO2) concentration of 0.1 ppb.
The current ozone (O3) level in Issaquah, Washington at the moment is 29.044 ppm.
Nitrogen dioxide (NO2) level in Issaquah, Washington at the moment is 4.113 ppb.
All Rights Reserved © Ambee Inc. 2025