Air Quality in SeaTac, United States

Partly Cloudy
15.3°C · 66.7% humidity
15.3°
Feels 15.3°
62
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
18 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
55 1pm
61
61
62 4pm
58
58
58 7pm
58
58
58 10pm
58
58
58 1am
58
58
58 4am
58
58
58 7am
38
38
38 10am
38
38
Station readings
55
61
61
68
CAMS model adj +4
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
34
34
34
34
AD 728×90

Air Quality Index Trend

48h · 16 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. Current PM2.5 concentration in SeaTac is 1.1× the WHO 24-hour guideline of 15 µg/m³.

66.7%
Humidity
32.7 km/h
Wind SSW
1017.1 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
62
17.06 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for SeaTac?

Temperature & Precipitation

PM2.5 Trend

48h · 16 stations
PM2.517.06 µg/m³ ×1.1 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX12.9
Extreme
AD 300×250
Station readings (18 stations within 25 km)
17.06
Median
20.66
Average
0.84
Low
51.3
High
PM2.5 µg/m³ · Model: 16.35 · Bias: -0.7

What is the 7-day forecast for SeaTac?

08-03
32.6° 12.5°
0.06 mm
08-04
27.0° 15.0°
0.06 mm
08-05
32.6° 13.6°
08-06
26.4° 15.9°
0.06 mm
08-07
30.4° 15.3°
08-08
28.7° 11.6°
08-09
27.1° 11.6°
Both models agree Avg diff: 3.2°C

Where are air quality stations near SeaTac?

62
SeaTac-Sunset Park
3.6 km PM2.5: 17.4 µg/m³
70
Tukwilla Allentown, Washington, USA
5.7 km PM2.5: 21.1 µg/m³
70
Des Moines-S 240th St
6.7 km PM2.5: 21.0 µg/m³
76
South Park, Seattle, Washington, USA
9.4 km PM2.5: 24.0 µg/m³
56
South Park, Seattle, Washington, USA
9.4 km PM2.5: 14.5 µg/m³
72
Seattle-S Myrtle St
10.1 km PM2.5: 21.9 µg/m³
75
Seattle-13th Ave S
10.6 km PM2.5: 23.6 µg/m³
81
Seattle-5th Ave S
11.1 km PM2.5: 26.6 µg/m³
66
Duwamish, Seattle, Washington, USA
12.9 km PM2.5: 19.2 µg/m³
68
Duwamish, Seattle, Washington, USA
12.9 km PM2.5: 20.2 µg/m³

What cities are near SeaTac?

64 Tukwila 61 Burien 60 Des Moines 67 Bryn Mawr-Skyway 68 Renton 62 Kent 66 East Hill-Meridian 68 Fairwood 65 Columbia City 63 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 2026-08-07T23:52 UTC.