What is the air quality in Castries?

Castries, Saint Lucia has an annual US AQI of 46 (Reasonable) and average PM2.5 of 8.9 µg/m³, ranking #522 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Castries?

December is typically the cleanest month (AQI 38) and June the most polluted (AQI 57).

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

Global rank	City	Continent	AQI	PM2.5
522	Castries, Saint Lucia	North America	AQI 46	PM2.5 8.9 µg/m³