Air Quality in Seattle, United States

Windy
14.5°C · 55.3% humidity
14.5°
Feels 14.5°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
28 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 2pm
10
10
18 5pm
16
14
13 8pm
12
12
11 11pm
11
11
10 2am
10
10
10 5am
12
12
12 8am
12
12
12 11am
10
10
Station readings
8
8
8
12
CAMS model adj -15
25
25
25
24
25
24
25
25
25
25
25
25
25
25
25
25
27
27
27
27
27
27
25
25
AD 728×90

Air Quality Index Trend

48h · 1 stn

Seattle's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

55.3%
Humidity
45.4 km/h
Wind NW
1016.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
18
4.42 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Seattle?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.54.42 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (28 stations within 25 km)
4.42
Median
3.24
Average
1.0
Low
6.5
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +1.4

What is the 7-day forecast for Seattle?

06-09
14.5° 8.9°
0.5 mm
06-10
19.3° 10.3°
06-11
21.3° 7.6°
06-12
30.9° 11.8°
0.06 mm
06-13
29.9° 6.9°
06-14
22.9° 10.1°
0.31 mm
06-15
23.7° 8.6°
0.63 mm
Both models agree Avg diff: 4.6°C

Where are air quality stations near Seattle?

27
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 6.5 µg/m³
57
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 15.0 µg/m³
1
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 0.2 µg/m³
3
Olive St, Seattle, Washington, USA
2.4 km PM2.5: 0.7 µg/m³
10
Seattle-16th Ave S
3.2 km PM2.5: 2.4 µg/m³
12
Belvidere
4.5 km 20.2°C 55.0% RH PM2.5: 2.8 µg/m³ PM10: 3.7 µg/m³
12
Seattle-23rd Ave SW
4.5 km PM2.5: 2.8 µg/m³
10
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 2.4 µg/m³
13
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 3.1 µg/m³
60
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 16.4 µg/m³

What cities are near Seattle?

15 Columbia City 14 Mercer Island 12 Kirkland 15 Bryn Mawr-Skyway 15 Bainbridge Island 11 Inglewood-Finn Hill 14 Burien 14 Tukwila 15 Renton 10 Shoreline
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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 2026-06-09T00:40 UTC.