Air Quality in Sammamish, United States

Cloudy
14.4°C · 73.1% humidity
14.4°
Feels 14.4°
81
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
20 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
70 1pm
79
77
81 4pm
78
77
75 7pm
74
74
73 10pm
73
73
72 1am
72
72
72 4am
72
72
72 7am
72
72
72 10am
72
72
Station readings
70
79
77
72
CAMS model adj +18
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

48h · 17 stn

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 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▲
81
26.46 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Sammamish?

Temperature & Precipitation

PM2.5 Trend

48h · 17 stations
PM2.526.46 µg/m³ ×1.8 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (20 stations within 25 km)
26.46
Median
20.7
Average
0.84
Low
51.3
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -13.0

What is the 7-day forecast for 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: 4.7°C

Where are air quality stations near Sammamish?

64
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 18.3 µg/m³
57
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 15.0 µg/m³
69
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 20.7 µg/m³
67
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 19.7 µg/m³
76
Issaquah-Lake Sammamish
10.0 km PM2.5: 24.1 µg/m³
68
Olive St, Seattle, Washington, USA
17.0 km PM2.5: 20.2 µg/m³
68
Seattle-NE 127th St
18.5 km PM2.5: 20.1 µg/m³
74
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 23.0 µg/m³
62
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 17.3 µg/m³
53
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 13.1 µg/m³

What cities are near Sammamish?

77 Redmond 79 City of Sammamish 77 Union Hill-Novelty Hill 83 West Lake Sammamish 71 Kirkland 73 Cottage Lake 75 Issaquah 72 Mercer Island 67 Inglewood-Finn Hill 66 Bothell
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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 2026-08-07T23:59 UTC.