Today | Weather | Thursday, July 30, 2026

Weather in Seattle, Washington

07:26 AM
Now
Cloudy Weather
54° F
Feels Like 54°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 1
Humidity 88 %
Today
Cloudy Weather
Day 75°
Night 57°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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.

Seattle Weather Forecast Updated

26 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 30, 2025)
Cloudy Night

Day

82°

Night

61°

Wind

6 mph

Precipitation

3 %

Air Quality in Seattle

NOW
8 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.74 µg/m³
PM10 3.11 µg/m³
O3 0.009 ppm
NO2 1.8 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0.47 µg/m³
NO 0.19 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)
PM2.51.74 µg/m³
PM103.11 µg/m³
O317.52 µg/m³
NO23.46 µg/m³
SO20.26 µg/m³
CO83.98 µg/m³
NH30.47 µg/m³
NO0.19 µg/m³