Today | Weather | Wednesday, July 22, 2026

Weather in Waipahu, Hawaii

09:28 PM
Now
Cloudy Night
77° F
Feels Like 77°
Precipitation 0 %
Wind 7 mph
Humidity 69 %
Today
Partly Sunny with Showers
Day 90°
Night 72°
Precipitation 60 %
Wind 12 mph
UV Index (0 - 11+) 5

Waipahu Weather Forecast Updated

Air Quality in Waipahu

NOW
22 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.36 µg/m³
PM10 9.57 µg/m³
O3 0.024 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.06 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.52.36 µg/m³
PM109.57 µg/m³
O346.88 µg/m³
NO20.17 µg/m³
SO20.27 µg/m³
CO74.37 µg/m³
NH30 µg/m³
NO0 µg/m³