Stay updated with real-time air quality in SeaTac, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
28
Good
SeaTac, Washington
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.57 μg/m³
0
55
155
255
425
605+
29.75 ppb
0
55
71
86
201
201+
0.15 ppb
0
36
76
186
605
1005+
11.61 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
SeaTac, Washington
SeaTac, Washington
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AQI 28
Good
5.39μg/m³
PM2.5
22.57μg/m³
PM10
29.75ppb
O3
0.15ppb
SO2
11.61ppb
NO2
0.18ppm
CO
AQI 27
Good
4.70μg/m³
PM2.5
21.00μg/m³
PM10
29.34ppb
O3
0.15ppb
SO2
12.00ppb
NO2
0.18ppm
CO
AQI 33
Good
6.07μg/m³
PM2.5
23.45μg/m³
PM10
29.73ppb
O3
0.14ppb
SO2
11.07ppb
NO2
0.18ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
24.88μg/m³
PM10
32.23ppb
O3
0.20ppb
SO2
10.84ppb
NO2
0.18ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
24.05μg/m³
PM10
30.26ppb
O3
0.15ppb
SO2
11.26ppb
NO2
0.18ppm
CO
AQI 33
Good
6.10μg/m³
PM2.5
23.77μg/m³
PM10
30.04ppb
O3
0.15ppb
SO2
11.21ppb
NO2
0.18ppm
CO
Air quality and pollutant data for Washington, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Seatac, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Seatac, Washington was at its worst at 02:00:00 on 2025-06-06.
In the last 24 hours, the best air quality in Seatac, Washington was observed at 12:00:00 on 2025-06-06.
As of now, the AQI in Seatac, Washington is 28, indicating Good conditions.
Seatac, Washington air has the highest levels of O3.
Poor air quality in Seatac, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Seatac, Washington are currently 5.388 μg/m3.
The PM10 concentration in Seatac, Washington is 22.566 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Seatac, Washington is 0.182 ppm.
Currently, Seatac, Washington has a sulfur dioxide (SO2) concentration of 0.148 ppb.
The current ozone (O3) level in Seatac, Washington at the moment is 29.752 ppm.
Nitrogen dioxide (NO2) level in Seatac, Washington at the moment is 11.61 ppb.
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