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Today | Weather | Friday, August 22, 2025
Extreme Heat Warning (Issued when dangerously high temperatures are expected.) Heat Advisory (Issued when high temperatures and humidity create conditions that may be hazardous during outdoor activity or prolonged exposure.)

Weather in Bellevue, Washington

12:11 PM
Now
Sunny WeatherSunny weather, clear skies and sunny weather.
79° F
Feels Like 84°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 11
Humidity 50 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 88°
Night 61°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Other:

Very warm with plenty of bright sunlight.

Bellevue Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 22, 2024)

Partly Sunny with ShowersPartly sunny weather with scattered clouds and occasional rain showers.

Day

73°

Night

59°

Wind

6 mph

UV Index

2

Precipitation

80

Air quality in Bellevue

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

Pollutant Concentrations:

PM2.5 7.49 µg/m³
PM10 14.54 µg/m³
O₃ 31.64 ppb
NO₂ 11.26 ppb
SO₂ 0.76 ppb
CO 143.19 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast