What is the air quality in Cayenne?

Cayenne, French Guiana has an annual US AQI of 50 (Reasonable) and average PM2.5 of 10.5 µg/m³, ranking #804 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Cayenne?

July is typically the cleanest month (AQI 41) and February the most polluted (AQI 61).

Where does Cayenne's air quality data come from?

PM2.5: 1998–2026 (monitors 2012–2014, 2019–2026, satellite 1998–2024, model 2025–2026; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Cayenne, French Guiana — Air Quality & Clean City Guide 2026

Cayenne Air Quality Data

Global rank	City	Continent	AQI	PM2.5
804	Cayenne, French Guiana	South America	AQI 50	PM2.5 10.5 µg/m³