Hourly Weather | Today Sunday, September 20, 2026
Waipahu, Hawaii
11 AM
Cloudy Weather
88°
Feels Like 93°
0
Humidity: 53%
UV Index: 7
Wind: 12 mph
12 PM
Cloudy Weather
90°
Feels Like 95°
0
Humidity: 51%
UV Index: 8
Wind: 14 mph
1 PM
Cloudy Weather
91°
Feels Like 95°
0
Humidity: 48%
UV Index: 8
Wind: 14 mph
2 PM
Cloudy Weather
90°
Feels Like 93°
0
Humidity: 49%
UV Index: 6
Wind: 14 mph
3 PM
Cloudy Weather
88°
Feels Like 91°
0
Humidity: 51%
UV Index: 4
Wind: 14 mph
4 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 53%
UV Index: 2
Wind: 14 mph
5 PM
Sunny Weather
84°
Feels Like 86°
0
Humidity: 58%
UV Index: 1
Wind: 12 mph
6 PM
Sunny Weather
84°
Feels Like 84°
0
Humidity: 61%
UV Index: 0
Wind: 12 mph
7 PM
Cloudy Night
81°
Feels Like 82°
0
Humidity: 65%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Night
81°
Feels Like 81°
0
Humidity: 69%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
79°
Feels Like 81°
0
Humidity: 70%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
79°
Feels Like 81°
0
Humidity: 73%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
79°
Feels Like 79°
0
Humidity: 74%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.43 µg/m³
  • PM10: 10.05 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.52 µg/m³
  • PM10: 10.33 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.62 µg/m³
  • PM10: 10.46 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.77 µg/m³
  • PM10: 10.72 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.95 µg/m³
  • PM10: 11.24 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.11 µg/m³
  • PM10: 11.97 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 12.87 µg/m³
  • O3: 0.030 ppm
  • NO2: 0 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 13.81 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.1 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
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.35 µg/m³
  • PM10: 14.58 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.1 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
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.36 µg/m³
  • PM10: 15.08 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.1 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
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 15.3 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.1 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
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.38 µg/m³
  • PM10: 15.42 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.1 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
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.39 µg/m³
  • PM10: 15.6 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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