Air Quality in SeaTac, United States

Partly Cloudy
21.0°C · 52.8% humidity
21.0°
Feels 21.0°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
20 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
11 6am
14
20
19 9am
18
3
2 12pm
1
1
1 3pm
0
0
0 6pm
0
0
0 9pm
0
0
0 12am
0
0
0 3am
14
14
Station readings
11
14
20
20
CAMS model adj -40
54
54
54
54
54
34
34
34
27
27
27
27
25
27
34
34
34
34
34
34
34
34
54
54
AD 728×90

Air Quality Index Trend

48h · 14 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.

52.8%
Humidity
35.6 km/h
Wind N
1019.0 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.5 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for SeaTac?

Temperature & Precipitation

PM2.5 Trend

48h · 14 stations
PM2.54.5 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (20 stations within 25 km)
4.5
Median
4.67
Average
0.1
Low
9.34
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +5.2

What is the 7-day forecast for SeaTac?

09-05
24.0° 11.7°
09-06
24.9° 13.7°
09-07
22.3° 10.9°
0.75 mm
09-08
27.4° 12.8°
1.13 mm
09-09
25.9° 11.9°
0.38 mm
09-10
30.4° 13.4°
09-11
25.9° 10.8°
Both models agree Avg diff: 3.4°C

Where are air quality stations near SeaTac?

21
SeaTac-Sunset Park
3.6 km PM2.5: 5.1 µg/m³
11
Des Moines-S 240th St
6.7 km PM2.5: 2.7 µg/m³
18
South Park, Seattle, Washington, USA
9.4 km PM2.5: 4.3 µg/m³
20
South Park, Seattle, Washington, USA
9.4 km PM2.5: 4.8 µg/m³
18
Seattle-S Myrtle St
10.1 km PM2.5: 4.4 µg/m³
29
Seattle-13th Ave S
10.6 km PM2.5: 7.0 µg/m³
24
Seattle-5th Ave S
11.1 km PM2.5: 5.8 µg/m³
26
Duwamish, Seattle, Washington, USA
12.9 km PM2.5: 6.2 µg/m³
10
Duwamish, Seattle, Washington, USA
12.9 km PM2.5: 2.4 µg/m³
20
Beacon Hill, Seattle, Washington, USA
13.4 km PM2.5: 4.8 µg/m³

What cities are near SeaTac?

20 Tukwila 20 Burien 13 Des Moines 20 Bryn Mawr-Skyway 20 Renton 15 Kent 17 East Hill-Meridian 18 Fairwood 21 Columbia City 14 Federal Way
Get AQI alerts for SeaTac

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:39 UTC.