Air Quality in Mercer Island, United States

Partly Cloudy
12.2°C · 53.4% humidity
12.2°
Feels 12.2°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
13 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
28 3pm
27
23
17 6pm
8
8
8 9pm
8
8
8 12am
8
21
21 3am
46
46
46 6am
46
46
46 9am
21
21
21 12pm
21
21
Station readings
28
27
23
17
17
CAMS model adj -29
75
50
50
50
37
37
37
37
37
37
37
50
50
75
75
75
75
75
75
50
50
50
50
50
AD 728×90

PM2.5 Trend (24h)

28h · 18 stations
53.4%
Humidity
26.3 km/h
Wind NNW
1017.1 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Mercer Island?

Temperature & Precipitation

PM2.54.65 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (13 stations within 25 km)
4.65
Median
4.99
Average
3.0
Low
7.67
High
PM2.5 µg/m³ · Model: 4.4 · Bias: -0.2

What is the 7-day forecast for Mercer Island?

04-09
12.2° 3.2°
04-10
14.2° 3.7°
04-11
9.7° 5.1°
4.13 mm
04-12
9.5° 4.7°
3.69 mm
04-13
9.9° 5.8°
0.56 mm
04-14
10.8° 6.3°
2.75 mm
04-15
11.1° 5.5°
Both models agree Avg diff: 2.1°C

Where are air quality stations near Mercer Island?

14
SE 12th St, Bellevue, Washington, USA
6.5 km
13
SE 12th St, Bellevue, Washington, USA
6.5 km
12
SE 12th St, Bellevue, Washington, USA
6.5 km
10
SE 12th St, Bellevue, Washington, USA
6.5 km
37
Beacon Hill, Seattle, Washington, USA
6.5 km
15
Seattle-S Myrtle St
6.5 km PM2.5: 3.7 µg/m³
17
Seattle-16th Ave S
6.8 km PM2.5: 4.0 µg/m³
9
Seattle-13th Ave S
7.7 km PM2.5: 2.2 µg/m³
37
10th and Weller, Seattle, Washington, USA
7.9 km
74
10th and Weller, Seattle, Washington, USA
7.9 km

What cities are near Mercer Island?

20 Columbia City 22 Bryn Mawr-Skyway 19 West Lake Sammamish 20 Seattle 22 Renton 22 Tukwila 20 Kirkland 18 Sammamish 18 Redmond 20 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 2026-04-09T18:40 UTC.