What is the air quality in San Nicolás de los Arroyos?

San Nicolás de los Arroyos, Argentina has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.6 µg/m³, ranking #1627 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in San Nicolás de los Arroyos?

February is typically the cleanest month (AQI 52) and June the most polluted (AQI 65).

Where does San Nicolás de los Arroyos'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.

San Nicolás de los Arroyos, Argentina — Air Quality & Clean City Guide 2026

San Nicolás de los Arroyos Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1627	San Nicolás de los Arroyos, Argentina	South America	AQI 57	PM2.5 12.6 µg/m³