Today | Weather | Wednesday, October 22, 2025

Weather in Federal Way, Washington

04:15 AM
Now
Cloudy Night
45° F
Feels Like 43°
Precipitation 0 %
Wind 6 mph
Humidity 95 %
Today
Rainy Weather
Day 63°
Night 48°
Precipitation 65 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Federal Way Weather Forecast Updated

29 minutes ago
Last updated on

Air Quality in Federal Way

NOW
20 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 4.87 µg/m³
PM10 7.59 µg/m³
O3 0.013 ppm
NO2 4.8 ppb
SO2 0.5 ppb
CO 0.16 ppm
NH3 1.84 µg/m³
NO 0 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)
PM2.54.87 µg/m³
PM107.59 µg/m³
O326.16 µg/m³
NO28.98 µg/m³
SO21.3 µg/m³
CO186.47 µg/m³
NH31.84 µg/m³
NO0 µg/m³