SmogRank / Cleaner or dirtier / Portugal
Portugal: cleaner or dirtier, 2026
In Portugal, 1 city has enough days in both years to compare 2026 so far (1 January to 6 October) with the same days of 2025: 1 got dirtier and 0 cleaner.
The one city that got dirtier
| # | City | 2025 | 2026 | Change |
|---|---|---|---|---|
| 1 | FunchalMadeira, Portugal | 22 | 25 | +0.6 µg/m³+15% |
Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-07 13:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.