Today | Weather | Friday, April 3, 2026

Weather in Seattle, Washington

07:46 PM
Now
Cloudy Night
55° F
Feels Like 54°
Precipitation 0 %
Wind 5 mph
Humidity 61 %
Today
Cloudy Weather
Day 61°
Night 43°
Precipitation 25 %
Wind 6 mph
UV Index (0 - 11+) 4

Seattle Weather Forecast Updated

47 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 3, 2025)
Cloudy Weather

Day

57°

Night

37°

Wind

4 mph

UV Index

4

Precipitation

3 %

Air Quality in Seattle

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.67 µg/m³
PM10 3.56 µg/m³
O3 0.034 ppm
NO2 3.5 ppb
SO2 0.2 ppb
CO 0.15 ppm
NH3 0.92 µg/m³
NO 0.03 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)
PM2.51.67 µg/m³
PM103.56 µg/m³
O366.57 µg/m³
NO26.55 µg/m³
SO20.63 µg/m³
CO173.68 µg/m³
NH30.92 µg/m³
NO0.03 µg/m³