Air Quality in Mercer Island, United States

Windy
14.2°C · 43.9% humidity
14.2°
Feels 14.2°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
14 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
16 7pm
15
14
14 10pm
12
12
12 1am
25
25
50 4am
50
50
50 7am
50
50
25 10am
25
25
25 1pm
25
25
25 4pm
25
25
Station readings
16
15
14
14
CAMS model adj -25
37
37
37
37
37
37
37
50
50
75
75
75
75
75
75
50
50
50
50
50
50
50
50
50
AD 728×90

PM2.5 Trend (24h)

27h · 19 stations
43.9%
Humidity
40.8 km/h
Wind NNW
1014.8 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Mercer Island?

Temperature & Precipitation

PM2.53.22 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (14 stations within 25 km)
3.22
Median
3.43
Average
2.45
Low
6.27
High
PM2.5 µg/m³ · Model: 4.4 · Bias: +1.2
Both models agree Avg diff: 2.3°C

Where are air quality stations near Mercer Island?

9
SE 12th St, Bellevue, Washington, USA
6.5 km
35
Beacon Hill, Seattle, Washington, USA
6.5 km
29
Beacon Hill, Seattle, Washington, USA
6.5 km
24
Beacon Hill, Seattle, Washington, USA
6.5 km
14
Seattle-S Myrtle St
6.5 km PM2.5: 3.4 µg/m³
14
Seattle-16th Ave S
6.8 km PM2.5: 3.3 µg/m³
14
Seattle-13th Ave S
7.7 km PM2.5: 3.3 µg/m³
20
10th and Weller, Seattle, Washington, USA
7.9 km
17
10th and Weller, Seattle, Washington, USA
7.9 km
17
Olive St, Seattle, Washington, USA
8.1 km

What cities are near Mercer Island?

13 Columbia City 15 Bryn Mawr-Skyway 13 West Lake Sammamish 13 Seattle 15 Renton 15 Tukwila 13 Kirkland 12 Sammamish 12 Redmond 14 City of Sammamish

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:12 UTC.