Air Quality in Issaquah, United States

Windy
23.9°C · 38.6% humidity
23.9°
Feels 23.9°
48
Good
Air quality is satisfactory. Enjoy outdoor activities.
15 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
55 11am
55
54
48 2pm
52
52
52 5pm
52
52
52 8pm
52
52
52 11pm
52
52
52 2am
52
52
52 5am
52
52
52 8am
52
52
Station readings
55
55
54
56
48
CAMS model adj -2
54
66
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

48h · 2 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.

38.6%
Humidity
55.2 km/h
Wind N
1012.9 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
48
11.48 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Issaquah?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.511.48 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX19.9
Extreme
AD 300×250
Station readings (15 stations within 25 km)
11.48
Median
12.97
Average
8.16
Low
25.0
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +4.9

What is the 7-day forecast for Issaquah?

07-21
30.4° 10.1°
07-22
24.9° 9.9°
07-23
30.9° 12.9°
07-24
29.3° 10.8°
07-25
24.6° 11.0°
07-26
30.1° 9.3°
07-27
27.1° 11.4°
Both models agree Avg diff: 4.4°C

Where are air quality stations near Issaquah?

49
Issaquah-Lake Sammamish
3.5 km PM2.5: 11.8 µg/m³
54
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 13.5 µg/m³
31
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 7.4 µg/m³
75
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 23.5 µg/m³
35
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 8.4 µg/m³
87
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 29.2 µg/m³
80
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 25.9 µg/m³
93
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 32.1 µg/m³
43
Seattle-S Myrtle St
19.7 km PM2.5: 10.3 µg/m³
70
North Bend Way, North Bend, Washington, USA
20.0 km PM2.5: 21.1 µg/m³

What cities are near Issaquah?

49 West Lake Sammamish 50 City of Sammamish 51 Sammamish 51 Fairwood 52 Renton 52 Mercer Island 50 Maple Valley 52 Bryn Mawr-Skyway 48 Union Hill-Novelty Hill 50 East Hill-Meridian
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T21:53 UTC.