Hourly Weather | Today Monday, September 21, 2026
Apex, North Carolina
3 PM
Cloudy Weather
91°
Feels Like 99°
19
Humidity: 46%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
90°
Feels Like 93°
24
Humidity: 49%
UV Index: 2
Wind: 7 mph
5 PM
Sunny with a Chance of Thunderstorms
88°
Feels Like 88°
51
Humidity: 52%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Weather
86°
Feels Like 88°
47
Humidity: 55%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
82°
Feels Like 84°
45
Humidity: 61%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Weather
82°
Feels Like 84°
49
Humidity: 64%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
79°
Feels Like 82°
49
Humidity: 72%
UV Index: 0
Wind: 6 mph
10 PM
Stormy Weather
75°
Feels Like 73°
56
Humidity: 80%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
75°
Feels Like 77°
40
Humidity: 85%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.31 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.3 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
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.33 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.048 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
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.28 µg/m³
  • PM10: 6.15 µg/m³
  • O3: 0.047 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
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 6.17 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.25 µg/m³
  • PM10: 6.25 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 6.17 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.97 µg/m³
  • PM10: 6.07 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.02 µg/m³
  • PM10: 6.28 µg/m³
  • O3: 0.029 ppm
  • NO2: 2 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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