Air Quality in West Lake Sammamish, United States

Cloudy
14.4°C · 73.1% humidity
14.4°
Feels 14.4°
83
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
21 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
75 2pm
74
73
83 5pm
79
76
74 8pm
73
72
71 11pm
70
70
70 2am
69
69
69 5am
69
69
69 8am
69
69
69 11am
69
69
Station readings
75
74
73
CAMS model adj +15
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

West Lake Sammamish'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 West Lake Sammamish is 1.8× 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▲
83
27.25 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for West Lake Sammamish?

Temperature & Precipitation

PM2.5 Trend

47h · 18 stations
PM2.527.25 µg/m³ ×1.8 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (21 stations within 25 km)
27.25
Median
20.33
Average
0.84
Low
51.3
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -13.8

What is the 7-day forecast for West Lake Sammamish?

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 West Lake Sammamish?

76
Issaquah-Lake Sammamish
3.9 km PM2.5: 24.1 µg/m³
69
SE 12th St, Bellevue, Washington, USA
4.4 km PM2.5: 20.7 µg/m³
57
SE 12th St, Bellevue, Washington, USA
4.4 km PM2.5: 15.0 µg/m³
64
SE 12th St, Bellevue, Washington, USA
4.4 km PM2.5: 18.3 µg/m³
67
SE 12th St, Bellevue, Washington, USA
4.4 km PM2.5: 19.7 µg/m³
72
Seattle-S Myrtle St
15.2 km PM2.5: 21.9 µg/m³
62
Beacon Hill, Seattle, Washington, USA
15.6 km PM2.5: 17.3 µg/m³
66
Beacon Hill, Seattle, Washington, USA
15.6 km PM2.5: 19.2 µg/m³
61
Beacon Hill, Seattle, Washington, USA
15.6 km PM2.5: 16.9 µg/m³
78
Beacon Hill, Seattle, Washington, USA
15.6 km PM2.5: 24.9 µg/m³

What cities are near West Lake Sammamish?

79 City of Sammamish 81 Sammamish 75 Issaquah 72 Mercer Island 77 Redmond 77 Union Hill-Novelty Hill 65 Columbia City 68 Renton 67 Bryn Mawr-Skyway 71 Kirkland
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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 2026-08-08T00:03 UTC.