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)
33
Good
Issaquah, Washington
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.59 μg/m³
0
55
155
255
425
605+
15.09 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
6.03 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Issaquah, Washington
Issaquah, Washington
Scroll To Air Quality MapLoading...
AQI 33
Good
5.90μg/m³
PM2.5
21.71μg/m³
PM10
23.88ppb
O3
0.24ppb
SO2
2.73ppb
NO2
0.13ppm
CO
AQI 33
Good
6.19μg/m³
PM2.5
22.68μg/m³
PM10
23.92ppb
O3
0.24ppb
SO2
2.64ppb
NO2
0.13ppm
CO
AQI 27
Good
5.46μg/m³
PM2.5
22.28μg/m³
PM10
23.87ppb
O3
0.24ppb
SO2
2.67ppb
NO2
0.13ppm
CO
AQI 26
Good
4.03μg/m³
PM2.5
20.32μg/m³
PM10
28.26ppb
O3
0.24ppb
SO2
3.70ppb
NO2
0.13ppm
CO
AQI 22
Good
3.96μg/m³
PM2.5
17.36μg/m³
PM10
23.57ppb
O3
0.23ppb
SO2
2.97ppb
NO2
0.11ppm
CO
AQI 27
Good
5.29μg/m³
PM2.5
22.77μg/m³
PM10
24.18ppb
O3
0.23ppb
SO2
2.50ppb
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 Issaquah, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Issaquah, Washington was at its worst at 03:00:00 on 2025-07-22.
In the last 24 hours, the best air quality in Issaquah, Washington was observed at 10:00:00 on 2025-07-21.
As of now, the AQI in Issaquah, Washington is 33, indicating Good conditions.
Issaquah, Washington air has the highest levels of PM2.5.
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 5.7 μg/m3.
The PM10 concentration in Issaquah, Washington is 18.567 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Issaquah, Washington is 0.117 ppm.
Currently, Issaquah, Washington has a sulfur dioxide (SO2) concentration of 0.291 ppb.
The current ozone (O3) level in Issaquah, Washington at the moment is 22.974 ppm.
Nitrogen dioxide (NO2) level in Issaquah, Washington at the moment is 3.011 ppb.
All Rights Reserved © Ambee Inc. 2025