Worst air pollution Mount Pleasant, today and tomorrow
Today (9 August): Air quality in Mount Pleasant is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 22.8/100).
Tomorrow (10 August 2026): Air quality in Mount Pleasant is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 21.0/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Mount Pleasant's air quality in South Carolina benefits from the Charleston metropolitan area's coastal position with the Cooper River and Charleston Harbour providing maritime ventilation. Vehicle emissions from US-17 and the Arthur Ravenel Jr. Bridge approach are the primary local sources, while the Atlantic coastal exposure and tidal estuary geography generally maintain moderate to good conditions across this rapidly growing Charleston East Cooper suburb.
Today - 9 August | Pollution peaks at 09:00
AQI:
Fair
22.8/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
18.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
22.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
5.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 13:00
AQI:
Fair
21.0/100
PM2.5 (fine particles):
Good
11.7/100
PM10 (coarse particles):
Good
12.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
21.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
4.3/100
Pollen forecast in Mount Pleasant
View pollen forecastFrequently Asked Questions
Is air quality bad in Mount Pleasant right now?
On 9 August 2026, overall air quality in Mount Pleasant is fair. AQI is the main air quality indicator at 22.8/100. Pollution peaks around 9:00 AM (O3: 22.8/100).
Will air quality be worse tomorrow in Mount Pleasant?
On 10 August 2026, air quality conditions in Mount Pleasant will be similar to today, with AQI forecast at fair at 21.0/100. Pollution peaks around 1:00 PM (O3: 21.0/100).
When is air pollution at its worst in Mount Pleasant?
Seasonal changes shape air quality across Mount Pleasant: winter is typically the cleanest season, with mild temperatures and fewer stagnant air episodes, but hot, humid summer days bring the highest ozone risk, amplified by natural emissions from the dense surrounding forests. Occasional agricultural or prescribed-burning smoke can add short-lived particulate spikes outside the main summer ozone season.
Are air quality levels in Mount Pleasant based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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