Air Quality in Issaquah, United States

Cloudy
14.4°C · 73.1% humidity
14.4°
Feels 14.4°
75
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
14 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
95 2pm
93
75
75 5pm
78
79
81 8pm
82
82
83 11pm
83
83
84 2am
84
84
84 5am
84
84
84 8am
84
84
84 11am
84
84
Station readings
95
93
75
CAMS model adj +30
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

47h · 18 stn

Issaquah's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Issaquah is 1.6× the WHO 24-hour guideline of 15 µg/m³.

73.1%
Humidity
28.5 km/h
Wind SSW
1017.2 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
75
23.3 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Issaquah?

Temperature & Precipitation

PM2.5 Trend

47h · 18 stations
PM2.523.3 µg/m³ ×1.6 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (14 stations within 25 km)
23.3
Median
22.89
Average
12.85
Low
51.3
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -9.8

What is the 7-day forecast for Issaquah?

08-03
31.8° 9.3°
08-04
26.2° 10.4°
0.06 mm
08-05
32.2° 11.0°
08-06
23.7° 13.6°
0.06 mm
08-07
28.5° 12.4°
08-08
27.1° 8.3°
08-09
24.6° 8.5°
Both models agree Avg diff: 4.9°C

Where are air quality stations near Issaquah?

76
Issaquah-Lake Sammamish
3.5 km PM2.5: 24.1 µg/m³
67
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 19.7 µg/m³
69
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 20.7 µg/m³
64
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 18.3 µg/m³
57
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 15.0 µg/m³
70
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 21.1 µg/m³
72
Seattle-S Myrtle St
19.7 km PM2.5: 21.9 µg/m³
81
North Bend Way, North Bend, Washington, USA
20.0 km PM2.5: 26.4 µg/m³
66
Beacon Hill, Seattle, Washington, USA
21.1 km PM2.5: 19.2 µg/m³
62
Beacon Hill, Seattle, Washington, USA
21.1 km PM2.5: 17.3 µg/m³

What cities are near Issaquah?

83 West Lake Sammamish 79 City of Sammamish 81 Sammamish 68 Fairwood 68 Renton 72 Mercer Island 73 Maple Valley 67 Bryn Mawr-Skyway 77 Union Hill-Novelty Hill 66 East Hill-Meridian
Get AQI alerts for Issaquah

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T00:05 UTC.