Worst air pollution Federal Way, today and tomorrow
Today (15 July): Air quality in Federal Way is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 58.7/100).
Tomorrow (16 July 2026): Air quality in Federal Way is poor. AQI worsens to poor; NO2 decreases to good; O3 increases to poor; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 60.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Federal Way's air quality reflects the South Puget Sound position between Seattle and Tacoma, with vehicle emissions from I-5 and the surrounding mixed commercial and residential character contributing local sources. The Sound provides maritime ventilation, while summer wildfire smoke from the surrounding Pacific Northwest forests is an increasingly severe seasonal concern and the proximity to the Port of Tacoma's industrial corridor contributes background diesel PM2.5 on southerly wind days.
Today - 15 July | Pollution peaks at 06:00
AQI:
Medium
58.7/100
PM2.5 (fine particles):
Good
14.9/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Fair
26.5/100
O3 (ozone):
Medium
58.7/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.6/100
PM1 (ultrafine particles):
Good
18.6/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Poor
60.6/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
18.4/100
O3 (ozone):
Poor
60.6/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.9/100
PM1 (ultrafine particles):
Good
16.5/100
Pollen forecast in Federal Way
View pollen forecastFrequently Asked Questions
Is air quality bad in Federal Way right now?
On 15 July 2026, overall air quality in Federal Way is fair. NO2 is the main pollutant at 26.5/100. Pollution peaks around 6:00 AM (O3: 58.7/100).
Will air quality be worse tomorrow in Federal Way?
On 16 July 2026, air quality conditions in Federal Way will be worse than today, with AQI forecast at poor at 60.6/100. Pollution peaks around 4:00 AM (O3: 60.6/100).
When is air pollution at its worst in Federal Way?
Federal Way experiences a distinct seasonal swing in air quality, as spring is often the freshest stretch, sandwiched between winter rain and summer fire season; by contrast, late summer wildfire smoke is the biggest concern, sometimes pushing air quality into unhealthy territory for days at a stretch. Prevailing onshore winds usually keep pollution moving rather than letting it settle.
Are air quality levels in Federal Way based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app