Today | Weather | Wednesday, February 25, 2026

Weather in Sammamish, Washington

08:23 PM
Now
Cloudy Weather
43° F
Feels Like 37°
Precipitation 7 %
Wind 8 mph
Humidity 76 %
Today
Cloudy Night
Day 50°
Night 43°
Precipitation 25 %
Wind 9 mph

Sammamish Weather Forecast Updated

2 minutes ago
Last updated on

Air Quality in Sammamish

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.57 µg/m³
PM10 3.4 µg/m³
O3 0.038 ppm
NO2 2.4 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0.35 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
PM103.4 µg/m³
O373.8 µg/m³
NO24.57 µg/m³
SO20.41 µg/m³
CO163.77 µg/m³
NH30.35 µg/m³
NO0 µg/m³