What is the air quality in Heredia?

Heredia, Costa Rica has an annual US AQI of 65 (Polluted) and average PM2.5 of 16.7 µg/m³, ranking #2767 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Heredia?

January is typically the cleanest month (AQI 59) and April the most polluted (AQI 69).

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
2767	Heredia, Costa Rica	North America	AQI 65	PM2.5 16.7 µg/m³