Buenos Aires Air Quality
Argentina · -34.60, -58.38 · hour of 2026-10-06 21:00 UTC
52US AQI
ModerateCategory
11.3PM2.5 (µg/m³)
13.5PM10 (µg/m³)
41O3 (µg/m³)
24.8NO2 (µg/m³)
8.5SO2 (µg/m³)
310CO (µg/m³)
What this means
Buenos Aires currently ranks #41 of 50 tracked cities for PM2.5 (1 = most polluted). Its PM2.5 level of 11.3 µg/m³ is within the WHO 24-hour guideline of 15 µg/m³. A US AQI of 52 falls in the “Moderate” band; see the health guide for what each band means.
Figures are hourly values from the Open-Meteo Air Quality API, modelled from Copernicus CAMS forecasts for the city-centre coordinates rather than read from a single ground station. Concentrations are in micrograms per cubic metre; the US AQI follows EPA breakpoints and reports the worst pollutant. Data is cached for 15 minutes.