Today | Weather | Monday, April 27, 2026

Weather in Mount Pleasant, South Carolina

01:23 PM
Now
Cloudy Weather
63° F
Feels Like 70°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 10
Humidity 65 %
Today
Cloudy Weather
Day 70°
Night 57°
Precipitation 1 %
Wind 10 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

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.

Mount Pleasant Weather Forecast Updated

3 minutes ago
Last updated on

Air Quality in Mount Pleasant

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.18 µg/m³
PM10 6.42 µg/m³
O3 0.048 ppm
NO2 0.3 ppb
SO2 0.4 ppb
CO 0.12 ppm
NH3 0.45 µg/m³
NO 0.1 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)
PM2.52.18 µg/m³
PM106.42 µg/m³
O394.47 µg/m³
NO20.62 µg/m³
SO20.94 µg/m³
CO138.87 µg/m³
NH30.45 µg/m³
NO0.1 µg/m³