What is the air quality in West Island?

West Island, Cocos (Keeling) Islands has an annual US AQI of 20 (Excellent) and average PM2.5 of 3.5 µg/m³, ranking #18 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in West Island?

May is typically the cleanest month (AQI 17) and October the most polluted (AQI 25).

Where does West Island's air quality data come from?

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

West Island, Cocos (Keeling) Islands — Air Quality & Clean City Guide 2026

West Island Air Quality Data

Global rank	City	Continent	AQI	PM2.5
18	West Island, Cocos (Keeling) Islands	Oceania	AQI 20	PM2.5 3.5 µg/m³