Air Quality in SeaTac, United States

Clear
21.6°C · 41.4% humidity
21.6°
Feels 21.6°
48
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
49 10am
51
55
48 1pm
51
51
51 4pm
51
31
31 7pm
31
51
51 10pm
51
51
51 1am
51
31
31 4am
24
51
51 7am
51
51
Station readings
49
51
55
52
CAMS model adj -3
54
54
54
54
54
54
54
54
34
34
34
54
54
54
54
54
54
34
34
27
54
54
54
54
AD 728×90

Air Quality Index Trend

48h · 15 stn

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

41.4%
Humidity
15.6 km/h
Wind SW
1015.5 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
48
11.48 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for SeaTac?

Temperature & Precipitation

PM2.5 Trend

48h · 15 stations
PM2.511.48 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX19.9
Extreme
AD 300×250
Station readings (19 stations within 25 km)
11.48
Median
12.23
Average
7.55
Low
30.35
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +2.0

What is the 7-day forecast for SeaTac?

07-21
32.8° 12.6°
07-22
26.5° 14.1°
07-23
32.9° 17.3°
07-24
31.0° 14.1°
07-25
25.2° 15.2°
07-26
32.3° 11.8°
07-27
30.0° 14.2°
Both models agree Avg diff: 3.5°C

Where are air quality stations near SeaTac?

51
SeaTac-Sunset Park
3.6 km PM2.5: 12.1 µg/m³
34
Tukwilla Allentown, Washington, USA
5.7 km PM2.5: 8.2 µg/m³
59
Tukwilla Allentown, Washington, USA
5.7 km PM2.5: 15.9 µg/m³
51
Tukwilla Allentown, Washington, USA
5.7 km PM2.5: 12.1 µg/m³
38
Des Moines-S 240th St
6.7 km PM2.5: 9.2 µg/m³
48
South Park, Seattle, Washington, USA
9.4 km PM2.5: 11.5 µg/m³
47
South Park, Seattle, Washington, USA
9.4 km PM2.5: 11.3 µg/m³
40
Seattle-S Myrtle St
10.1 km PM2.5: 9.7 µg/m³
39
Seattle-13th Ave S
10.6 km PM2.5: 9.4 µg/m³
135
Seattle-5th Ave S
11.1 km PM2.5: 49.4 µg/m³

What cities are near SeaTac?

49 Tukwila 49 Burien 40 Des Moines 51 Bryn Mawr-Skyway 51 Renton 44 Kent 48 East Hill-Meridian 49 Fairwood 50 Columbia City 34 Federal Way
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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 2026-07-21T20:29 UTC.