Today | Weather | Friday, September 18, 2026

Weather in Salem, Oregon

10:39 PM
Now
Night
57° F
Feels Like 57°
Precipitation 0 %
Wind 2 mph
Humidity 85 %
Today
Cloudy Night
Day 70°
Night 48°
Precipitation 0 %
Wind 2 mph

Salem Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Cloudy Night

Day

79°

Night

52°

Wind

5 mph

Precipitation

0 %

Air Quality in Salem

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.74 µg/m³
PM10 8.59 µg/m³
O3 0.026 ppm
NO2 0.8 ppb
SO2 0.1 ppb
CO 0.13 ppm
NH3 0.06 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)
PM2.53.74 µg/m³
PM108.59 µg/m³
O351.92 µg/m³
NO21.54 µg/m³
SO20.15 µg/m³
CO152.58 µg/m³
NH30.06 µg/m³
NO0 µg/m³