Air Quality in Issaquah, United States

Partly Cloudy
17.7°C · 58.5% humidity
17.7°
Feels 17.7°
7
Good
Air quality is satisfactory. Enjoy outdoor activities.
20 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 9am
8
8
7 12pm
8
8
8 3pm
8
7
8 6pm
8
8
8 9pm
8
8
8 12am
8
8
8 3am
8
8
8 6am
8
8
Station readings
8
8
12
12
CAMS model adj -17
27
25
25
25
25
25
25
25
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

48h · 1 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.

58.5%
Humidity
18.8 km/h
Wind SSW
1014.9 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
7
1.71 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Issaquah?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.51.71 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
Station readings (20 stations within 25 km)
1.71
Median
3.11
Average
1.0
Low
7.2
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +4.2

What is the 7-day forecast for Issaquah?

06-08
22.7° 9.1°
0.81 mm
06-09
15.2° 8.9°
1.12 mm
06-10
20.0° 10.3°
06-11
22.0° 7.4°
06-12
31.5° 11.8°
0.19 mm
06-13
30.5° 6.2°
06-14
23.6° 10.0°
0.69 mm
Both models agree Avg diff: 4.8°C

Where are air quality stations near Issaquah?

4
Issaquah-Lake Sammamish
3.5 km PM2.5: 0.9 µg/m³
30
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 7.2 µg/m³
6
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 1.4 µg/m³
2
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 0.5 µg/m³
42
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 10.1 µg/m³
6
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 1.4 µg/m³
12
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 2.9 µg/m³
10
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 2.4 µg/m³
9
Seattle-S Myrtle St
19.7 km PM2.5: 2.2 µg/m³
55
North Bend Way, North Bend, Washington, USA
20.0 km PM2.5: 14.0 µg/m³

What cities are near Issaquah?

8 West Lake Sammamish 9 City of Sammamish 10 Sammamish 11 Fairwood 11 Renton 12 Mercer Island 10 Maple Valley 11 Bryn Mawr-Skyway 9 Union Hill-Novelty Hill 11 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 2026-06-08T19:31 UTC.