Today | Weather | Tuesday, October 20, 2026

Weather in Honolulu, Hawaii

04:38 PM
Now
Cloudy Weather
81° F
Feels Like 79°
Precipitation 1 %
Wind 17 mph
UV Index (0 - 11+) 1
Humidity 61 %
Today
Cloudy Weather
Day 84°
Night 73°
Precipitation 13 %
Wind 17 mph
UV Index (0 - 11+) 7

Honolulu Weather Forecast Updated

39 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 20, 2025)
Cloudy Night

Day

86°

Night

73°

Wind

9 mph

Precipitation

25 %

Air Quality in Honolulu

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.67 µg/m³
PM10 13.17 µg/m³
O3 0.044 ppm
NO2 0 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0 µg/m³
NO 0.01 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)
PM2.5 – 2.67 µg/m³
PM10 – 13.17 µg/m³
O3 – 85.8 µg/m³
NO2 – 0.08 µg/m³
SO2 – 0.2 µg/m³
CO – 84.15 µg/m³
NH3 – 0 µg/m³
NO – 0.01 µg/m³