Today | Weather | Monday, October 12, 2026

Weather in Federal Way, Washington

06:09 PM
Now
Cloudy Weather
59° F
Feels Like 59°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 0
Humidity 46 %
Today
Sunny Weather
Day 64°
Night 43°
Precipitation 1 %
Wind 4 mph
UV Index (0 - 11+) 3

Federal Way Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Partly Sunny with Showers

Day

55°

Night

43°

Wind

10 mph

UV Index

20

Precipitation

96 %

Air Quality in Federal Way

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.88 µg/m³
PM10 2.4 µg/m³
O3 0.034 ppm
NO2 2.5 ppb
SO2 0.6 ppb
CO 0.14 ppm
NH3 0.57 µg/m³
NO 0.22 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 1.88 µg/m³
PM10 – 2.4 µg/m³
O3 – 66.34 µg/m³
NO2 – 4.7 µg/m³
SO2 – 1.61 µg/m³
CO – 158.06 µg/m³
NH3 – 0.57 µg/m³
NO – 0.22 µg/m³