SmogRank / World / Europe / Portugal / Azores
Most polluted cities in Azores, Portugal
No city in Azores, Portugal has enough readings to rank for the last 30 days.
A city joins this ranking with enough days of readings over the last 30 days; none here has that right now, so there is nothing to map or chart.
Excellent0–50
Good51–100
Lightly polluted101–150
Moderately polluted151–200
Heavily polluted201–300
Severely polluted301+
China's Air Quality Index (HJ 633-2012), PM2.5 individual index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the China AQI PM2.5 sub-index.