Today | Weather | Thursday, July 2, 2026

Weather in Waipahu, Hawaii

04:11 PM
Now
Partly Sunny with Showers
86° F
Feels Like 84°
Precipitation 52 %
Wind 12 mph
UV Index (0 - 11+) 1
Humidity 54 %
Today
Rainy Weather
Day 88°
Night 70°
Precipitation 84 %
Wind 11 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Waipahu Weather Forecast Updated

Air Quality in Waipahu

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.2 µg/m³
PM10 7.83 µg/m³
O3 0.028 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0 µg/m³
NO 0.02 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)
PM2.52.2 µg/m³
PM107.83 µg/m³
O354.43 µg/m³
NO20.1 µg/m³
SO20.21 µg/m³
CO74.61 µg/m³
NH30 µg/m³
NO0.02 µg/m³