Today | Weather | Monday, September 21, 2026

Weather in Pasco, Washington

11:55 AM
Now
Sunny Weather
68° F
Feels Like 73°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4
Humidity 45 %
Today
Sunny Weather
Day 88°
Night 57°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 4

Pasco Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Partly Sunny with Showers

Day

77°

Night

45°

Wind

12 mph

UV Index

20

Precipitation

87 %

Air Quality in Pasco

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.71 µg/m³
PM10 4.17 µg/m³
O3 0.043 ppm
NO2 0.6 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 0.89 µg/m³
NO 0.28 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)
PM2.52.71 µg/m³
PM104.17 µg/m³
O384.74 µg/m³
NO21.14 µg/m³
SO20.44 µg/m³
CO124.3 µg/m³
NH30.89 µg/m³
NO0.28 µg/m³