Today | Weather | Wednesday, February 25, 2026

Weather in Mount Pleasant, South Carolina

11:19 PM
Now
Cloudy Night
55° F
Feels Like 50°
Precipitation 0 %
Wind 9 mph
Humidity 79 %
Today
Cloudy Night
Day 59°
Night 55°
Precipitation 1 %
Wind 10 mph

Mount Pleasant Weather Forecast Updated

Last updated on

Air Quality in Mount Pleasant

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.59 µg/m³
PM10 8.34 µg/m³
O3 0.052 ppm
NO2 1.1 ppb
SO2 0.6 ppb
CO 0.13 ppm
NH3 0.2 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)
PM2.54.59 µg/m³
PM108.34 µg/m³
O3102.9 µg/m³
NO22.05 µg/m³
SO21.57 µg/m³
CO147.17 µg/m³
NH30.2 µg/m³
NO0 µg/m³