Today | Weather | Saturday, April 4, 2026

Weather in Charleston, South Carolina

08:57 PM
Now
Night
68° F
Feels Like 66°
Precipitation 0 %
Wind 8 mph
Humidity 85 %
Today
Cloudy Night
Day 75°
Night 66°
Precipitation 7 %
Wind 8 mph

Charleston Weather Forecast Updated

32 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 4, 2025)
Cloudy Weather

Day

79°

Night

66°

Wind

11 mph

UV Index

8

Precipitation

25 %

Air Quality in Charleston

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.22 µg/m³
PM10 7.54 µg/m³
O3 0.040 ppm
NO2 0.4 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0 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)
PM2.52.22 µg/m³
PM107.54 µg/m³
O378.97 µg/m³
NO20.69 µg/m³
SO20.35 µg/m³
CO113.86 µg/m³
NH30 µg/m³
NO0 µg/m³