Today | Weather | Wednesday, February 25, 2026

Weather in Kennewick, Washington

09:46 PM
Now
Cloudy Night
39° F
Feels Like 27°
Precipitation 0 %
Wind 18 mph
Humidity 77 %
Today
Cloudy Night
Day 54°
Night 34°
Precipitation 0 %
Wind 16 mph

Kennewick Weather Forecast Updated

Last updated on

Air Quality in Kennewick

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.57 µg/m³
PM10 2.3 µg/m³
O3 0.040 ppm
NO2 1.4 ppb
SO2 0.1 ppb
CO 0.13 ppm
NH3 1.23 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)
PM2.51.57 µg/m³
PM102.3 µg/m³
O378.51 µg/m³
NO22.61 µg/m³
SO20.23 µg/m³
CO152.56 µg/m³
NH31.23 µg/m³
NO0 µg/m³