Hourly Weather Forecast for Charleston, South Carolina

Hourly Weather | Today › Wednesday, July 15, 2026

Active Weather Warnings

Coastal Flood Advisory

Charleston, South Carolina

7 PM

82°

Feels Like 93°

Humidity: 82%

UV Index: 1

Wind: 7 mph

8 PM

81°

Feels Like 91°

Humidity: 88%

UV Index: 0

Wind: 6 mph

9 PM

81°

Feels Like 91°

Humidity: 90%

UV Index: 0

Wind: 6 mph

10 PM

79°

Feels Like 90°

Humidity: 94%

UV Index: 0

Wind: 5 mph

11 PM

79°

Feels Like 88°

Humidity: 97%

UV Index: 0

Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.78 µg/m³
PM₁₀: 5.39 µg/m³
O₃: 0.043 ppm
NO₂: 1.5 ppb
SO₂: 0.3 ppb
CO: 0.13 ppm

Health Recommendations:

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

8 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.65 µg/m³
PM₁₀: 5.29 µg/m³
O₃: 0.042 ppm
NO₂: 1.4 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

9 PM

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.38 µg/m³
PM₁₀: 5.04 µg/m³
O₃: 0.041 ppm
NO₂: 1.1 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

10 PM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.14 µg/m³
PM₁₀: 4.8 µg/m³
O₃: 0.040 ppm
NO₂: 1 ppb
SO₂: 0.3 ppb
CO: 0.11 ppm

Health Recommendations:

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

11 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.87 µg/m³
PM₁₀: 4.51 µg/m³
O₃: 0.038 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.11 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Charleston

Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued July 15 at 2:09PM EDT until July 16 at 12:00AM EDT by NWS Charleston SC

Jul 15, 8:00 PM → Jul 16, 12:00 AM

WHAT: Up to one half foot of inundation above ground level
expected along shorelines and tidal waterways (7.2 to 7.4 feet
Mean Lower Low Water at Charleston).

WHERE: Coastal Colleton and Charleston Counties.

WHEN: From 8 PM this evening to midnight EDT tonight.

IMPACTS: This could result in some roads becoming impassable.

ADDITIONAL DETAILS: High tide will occur around 9:53 PM today
at Charleston. Saltwater inundation will be possible 1 to 2
hours before and after high tide.

+ Read More

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Visit water.weather.gov for additional water level and flood impact information.

Updated: Jul 15, 4:35 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Charleston

Coastal Flood Advisory

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