What is the air quality in Georgetown?

Georgetown, Ascension Island has an annual US AQI of 21 (Excellent) and average PM2.5 of 3.7 µg/m³, ranking #20 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Georgetown?

April is typically the cleanest month (AQI 15) and August the most polluted (AQI 34).

Where does Georgetown'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.

Georgetown, Ascension Island — Air Quality & Clean City Guide 2026

Georgetown Air Quality Data

Global rank	City	Continent	AQI	PM2.5
20	Georgetown, Ascension Island	Africa & Middle East	AQI 21	PM2.5 3.7 µg/m³