Hourly Weather | Today Tuesday, September 1, 2026
Mount Pleasant, South Carolina
12 PM
Cloudy Weather
86°
Feels Like 102°
20
Humidity: 72%
UV Index: 8
Wind: 6 mph
1 PM
Cloudy Weather
88°
Feels Like 106°
16
Humidity: 67%
UV Index: 8
Wind: 7 mph
2 PM
Cloudy Weather
91°
Feels Like 106°
7
Humidity: 63%
UV Index: 8
Wind: 7 mph
3 PM
Cloudy Weather
90°
Feels Like 104°
7
Humidity: 64%
UV Index: 6
Wind: 8 mph
4 PM
Cloudy Weather
88°
Feels Like 100°
7
Humidity: 68%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
88°
Feels Like 99°
7
Humidity: 71%
UV Index: 2
Wind: 8 mph
6 PM
Cloudy Weather
84°
Feels Like 97°
7
Humidity: 75%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
82°
Feels Like 93°
5
Humidity: 80%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
81°
Feels Like 90°
0
Humidity: 88%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
77°
Feels Like 88°
0
Humidity: 97%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
75°
Feels Like 88°
0
Humidity: 100%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
77°
Feels Like 88°
0
Humidity: 99%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

12 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 1.48 µg/m³
  • O3: 0.020 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.8 µg/m³
  • PM10: 1.66 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.89 µg/m³
  • PM10: 1.78 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.92 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.97 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.8 µg/m³
  • PM10: 1.86 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 1.68 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.6 µg/m³
  • PM10: 1.72 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 1.81 µg/m³
  • O3: 0.020 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 1.9 µg/m³
  • O3: 0.020 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.53 µg/m³
  • PM10: 1.95 µg/m³
  • O3: 0.019 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.52 µg/m³
  • PM10: 1.94 µg/m³
  • O3: 0.019 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.