Today | Weather | Monday, September 14, 2026

Weather in Charleston, South Carolina

02:20 AM
Now
Cloudy Night
81° F
Feels Like 95°
Precipitation 19 %
Wind 4 mph
Humidity 96 %
Today
Sunny with a Chance of Thunderstorms
Day 93°
Night 75°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 7

Charleston Weather Forecast Updated

21 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 14, 2025)
Cloudy Weather

Day

81°

Night

64°

Wind

7 mph

Precipitation

3 %

Air Quality in Charleston

NOW
25 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.12 µg/m³
PM10 7.65 µg/m³
O3 0.027 ppm
NO2 1.1 ppb
SO2 0.7 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)
PM2.55.12 µg/m³
PM107.65 µg/m³
O353.74 µg/m³
NO22.04 µg/m³
SO21.88 µg/m³
CO118.98 µg/m³
NH30 µg/m³
NO0 µg/m³