Today | Weather | Monday, September 21, 2026

Weather in Olympia, Washington

10:55 AM
Now
Cloudy Weather
57° F
Feels Like 57°
Precipitation 27 %
Wind 6 mph
UV Index (0 - 11+) 1
Humidity 83 %
Today
Partly Sunny with Showers
Day 70°
Night 52°
Precipitation 49 %
Wind 6 mph
UV Index (0 - 11+) 4

Olympia Weather Forecast Updated

42 minutes ago
Last updated on

Air Quality in Olympia

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.2 µg/m³
PM10 2.03 µg/m³
O3 0.028 ppm
NO2 1.2 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.18 µg/m³
NO 0.46 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)
PM2.51.2 µg/m³
PM102.03 µg/m³
O354.13 µg/m³
NO22.18 µg/m³
SO20.24 µg/m³
CO129.99 µg/m³
NH30.18 µg/m³
NO0.46 µg/m³