Today | Weather | Thursday, September 10, 2026

Weather in Waipahu, Hawaii

09:36 PM
Now
Cloudy Night
77° F
Feels Like 77°
Precipitation 8 %
Wind 7 mph
Humidity 69 %
Today
Partly Sunny with Showers
Day 90°
Night 72°
Precipitation 99 %
Wind 9 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Waipahu Weather Forecast Updated

Air Quality in Waipahu

NOW
21 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.86 µg/m³
PM10 5.37 µg/m³
O3 0.023 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.08 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)
PM2.52.86 µg/m³
PM105.37 µg/m³
O344.77 µg/m³
NO20.15 µg/m³
SO20.32 µg/m³
CO96.41 µg/m³
NH30 µg/m³
NO0 µg/m³