Today | Weather | Wednesday, August 12, 2026

Weather in Sammamish, Washington

04:53 AM
Now
Cloudy Weather
57° F
Feels Like 57°
Precipitation 0 %
Wind 2 mph
Humidity 88 %
Today
Cloudy Weather
Day 77°
Night 57°
Precipitation 25 %
Wind 5 mph
UV Index (0 - 11+) 6

Sammamish Weather Forecast Updated

59 minutes ago
Last updated on

Air Quality in Sammamish

NOW
14 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.4 µg/m³
PM10 3.62 µg/m³
O3 0.016 ppm
NO2 1.4 ppb
SO2 0.2 ppb
CO 0.07 ppm
NH3 1.18 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)
PM2.52.4 µg/m³
PM103.62 µg/m³
O330.68 µg/m³
NO22.65 µg/m³
SO20.57 µg/m³
CO78.81 µg/m³
NH31.18 µg/m³
NO0 µg/m³