Air Quality in Sammamish, United States

Partly Cloudy
21.2°C · 53.9% humidity
21.2°
Feels 21.2°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
25 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
30 8am
32
28
19 11am
20
21
22 2pm
3
3
0 5pm
0
0
4 8pm
24
24
24 11pm
36
36
53 2am
53
53
54 5am
53
53
Station readings
30
32
28
18
CAMS model adj -30
54
54
54
54
54
54
54
34
34
27
27
27
34
54
54
54
66
66
83
83
83
84
83
83
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.

53.9%
Humidity
25.1 km/h
Wind NNW
1019.0 hPa
Pressure
7.9
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.5 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Sammamish?

Temperature & Precipitation

PM2.5 Trend

48h · 17 stations
PM2.54.5 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX7.9
Very High
AD 300×250
Station readings (25 stations within 25 km)
4.5
Median
4.9
Average
0.1
Low
14.09
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +5.2

What is the 7-day forecast for Sammamish?

09-05
23.7° 9.3°
09-06
25.0° 11.6°
09-07
21.9° 9.4°
1.94 mm
09-08
28.0° 9.8°
2.63 mm
09-09
25.9° 12.5°
0.94 mm
09-10
28.8° 11.8°
09-11
24.7° 8.3°
Both models agree Avg diff: 3.9°C

Where are air quality stations near Sammamish?

14
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 3.4 µg/m³
15
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 3.6 µg/m³
15
SE 12th St, Bellevue, Washington, USA
6.8 km PM2.5: 3.6 µg/m³
12
Issaquah-Lake Sammamish
10.0 km PM2.5: 2.8 µg/m³
9
Olive St, Seattle, Washington, USA
17.0 km PM2.5: 2.2 µg/m³
23
Seattle-NE 127th St
18.5 km PM2.5: 5.4 µg/m³
15
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 3.6 µg/m³
25
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 6.0 µg/m³
35
10th and Weller, Seattle, Washington, USA
18.6 km PM2.5: 8.4 µg/m³
14
Seattle-16th Ave S
18.6 km PM2.5: 3.4 µg/m³

What cities are near Sammamish?

20 Redmond 18 City of Sammamish 20 Union Hill-Novelty Hill 17 West Lake Sammamish 22 Kirkland 21 Cottage Lake 17 Issaquah 19 Mercer Island 21 Inglewood-Finn Hill 20 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 2026-09-05T18:57 UTC.