Air Quality in Issaquah, United States

Windy
15.2°C · 53.3% humidity
15.2°
Feels 15.2°
11
Good
Air quality is satisfactory. Enjoy outdoor activities.
18 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
12 4pm
11
12
11 7pm
12
12
12 10pm
12
12
12 1am
12
12
12 4am
12
12
12 7am
12
12
12 10am
12
12
12 1pm
12
12
Station readings
8
12
12
21
CAMS model adj -13
25
24
25
25
25
25
25
25
25
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.

53.3%
Humidity
49.2 km/h
Wind NW
1016.2 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
11
2.67 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Issaquah?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.52.67 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (18 stations within 25 km)
2.67
Median
3.91
Average
0.2
Low
8.4
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +3.3

What is the 7-day forecast for Issaquah?

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
06-15
23.8° 8.3°
2.19 mm
Both models agree Avg diff: 5.0°C

Where are air quality stations near Issaquah?

12
Issaquah-Lake Sammamish
3.5 km PM2.5: 2.9 µg/m³
7
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 1.7 µg/m³
15
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 3.6 µg/m³
80
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 25.9 µg/m³
5
SE 12th St, Bellevue, Washington, USA
11.7 km PM2.5: 1.2 µg/m³
55
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 14.0 µg/m³
51
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 12.1 µg/m³
6
Tukwilla Allentown, Washington, USA
18.8 km PM2.5: 1.4 µg/m³
13
Seattle-S Myrtle St
19.7 km PM2.5: 3.1 µg/m³
54
North Bend Way, North Bend, Washington, USA
20.0 km PM2.5: 13.5 µg/m³

What cities are near Issaquah?

10 West Lake Sammamish 12 City of Sammamish 12 Sammamish 14 Fairwood 12 Renton 15 Mercer Island 13 Maple Valley 10 Bryn Mawr-Skyway 12 Union Hill-Novelty Hill 15 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 2026-06-09T02:23 UTC.