Today | Weather | Wednesday, May 20, 2026

Weather in Richland, Washington

02:53 PM
Now
Cloudy Weather
79° F
Feels Like 86°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 6
Humidity 24 %
Today
Cloudy Weather
Day 81°
Night 50°
Precipitation 1 %
Wind 4 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.

Richland Weather Forecast Updated

2 minutes ago
Last updated on

Air Quality in Richland

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.8 µg/m³
PM10 1.34 µg/m³
O3 0.045 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.78 µg/m³
NO 0.06 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)
PM2.50.8 µg/m³
PM101.34 µg/m³
O388.23 µg/m³
NO20.27 µg/m³
SO20.17 µg/m³
CO111.05 µg/m³
NH30.78 µg/m³
NO0.06 µg/m³