Hourly Weather | Today Monday, September 21, 2026
Rock Hill, South Carolina
3 PM
Cloudy Weather
91°
Feels Like 100°
15
Humidity: 45%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
91°
Feels Like 97°
19
Humidity: 49%
UV Index: 3
Wind: 6 mph
5 PM
Cloudy Weather
88°
Feels Like 93°
43
Humidity: 53%
UV Index: 1
Wind: 5 mph
6 PM
Cloudy Weather
86°
Feels Like 90°
47
Humidity: 58%
UV Index: 1
Wind: 6 mph
7 PM
Sunny with a Chance of Thunderstorms
82°
Feels Like 84°
51
Humidity: 67%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Weather
81°
Feels Like 84°
40
Humidity: 70%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Weather
79°
Feels Like 81°
34
Humidity: 78%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
75°
Feels Like 79°
40
Humidity: 85%
UV Index: 0
Wind: 5 mph
11 PM
Stormy Weather
73°
Feels Like 72°
51
Humidity: 91%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.65 µg/m³
  • PM10: 6.1 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.55 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.44 µg/m³
  • PM10: 5.77 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.89 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.64 µg/m³
  • PM10: 6.17 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.66 µg/m³
  • PM10: 6.28 µg/m³
  • O3: 0.033 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.54 µg/m³
  • PM10: 6.22 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.48 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.38 µg/m³
  • PM10: 6.16 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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