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
9 2pm
9
9
18 5pm
16
13
13 8pm
12
11
10 11pm
10
10
9 2am
9
9
9 5am
11
11
11 8am
11
11
11 11am
9
9
Station readings
8
8
8
CAMS model adj -16
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

47h · 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

47h · 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?

9
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 2.2 µg/m³
29
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 7.0 µg/m³
9
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 2.2 µg/m³
3
Olive St, Seattle, Washington, USA
2.4 km PM2.5: 0.7 µg/m³
8
Seattle-16th Ave S
3.2 km PM2.5: 1.9 µg/m³
10
Belvidere
4.5 km 20.2°C 53.0% RH PM2.5: 2.5 µg/m³ PM10: 2.9 µg/m³
9
Seattle-23rd Ave SW
4.5 km PM2.5: 2.1 µg/m³
5
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 1.2 µg/m³
13
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 3.1 µg/m³
65
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 18.8 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 2026-06-09T00:18 UTC.