What is the air quality in Saint John's?

Saint John's, Antigua and Barbuda has an annual US AQI of 39 (Reasonable) and average PM2.5 of 7.3 µg/m³, ranking #246 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Saint John's?

December is typically the cleanest month (AQI 29) and June the most polluted (AQI 52).

Where does Saint John's'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.

Saint John's, Antigua and Barbuda — Air Quality & Clean City Guide 2026

Saint John's Air Quality Data

Global rank	City	Continent	AQI	PM2.5
246	Saint John's, Antigua and Barbuda	North America	AQI 39	PM2.5 7.3 µg/m³