Today | Weather | Wednesday, March 18, 2026

Weather in Winston-Salem, North Carolina

10:58 AM
Now
Cloudy Weather
36° F
Feels Like 39°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3
Humidity 39 %
Today
Cloudy Weather
Day 45°
Night 32°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 5

Winston-Salem Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)
Sunny Weather

Day

72°

Night

45°

Wind

6 mph

UV Index

6

Precipitation

0 %

Air Quality in Winston-Salem

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.49 µg/m³
PM10 4.48 µg/m³
O3 0.045 ppm
NO2 2.4 ppb
SO2 1.2 ppb
CO 0.15 ppm
NH3 1.8 µg/m³
NO 1.37 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)
PM2.52.49 µg/m³
PM104.48 µg/m³
O389.11 µg/m³
NO24.53 µg/m³
SO23.14 µg/m³
CO169.05 µg/m³
NH31.8 µg/m³
NO1.37 µg/m³