Today | Weather | Thursday, May 21, 2026

Weather in Winston-Salem, North Carolina

11:20 AM
Now
Cloudy Weather
84° F
Feels Like 93°
Precipitation 7 %
Wind 4 mph
UV Index (0 - 11+) 8
Humidity 50 %
Today
Sunny with a Chance of Thunderstorms
Day 90°
Night 59°
Precipitation 70 %
Wind 6 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Winston-Salem Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Cloudy Weather

Day

86°

Night

61°

Wind

7 mph

UV Index

7

Precipitation

25 %

Air Quality in Winston-Salem

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.12 µg/m³
PM10 6.48 µg/m³
O3 0.026 ppm
NO2 1.6 ppb
SO2 0.4 ppb
CO 0.11 ppm
NH3 1.2 µg/m³
NO 0.82 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)
PM2.53.12 µg/m³
PM106.48 µg/m³
O350.13 µg/m³
NO23.05 µg/m³
SO21.11 µg/m³
CO124.16 µg/m³
NH31.2 µg/m³
NO0.82 µg/m³