What is the air quality in Urban Honolulu HI?

Urban Honolulu HI, United States of America has an annual US AQI of 27 (Excellent) and average PM2.5 of 4.3 µg/m³, ranking #32 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Urban Honolulu HI?

July is typically the cleanest month (AQI 20) and January the most polluted (AQI 34).

Where does Urban Honolulu HI's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998, 2005–2007, 2016; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Urban Honolulu HI, United States of America — Air Quality & Clean City Guide 2026

Urban Honolulu HI Air Quality Data

Global rank	City	Continent	AQI	PM2.5
32	Urban Honolulu HI, United States of America	North America	AQI 27	PM2.5 4.3 µg/m³