SmogRank / Cleaner or dirtier / Peru
Peru: cleaner or dirtier, 2026
In Peru, 5 cities have 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 4 cleaner.
The one city that got dirtier
| # | City | 2025 | 2026 | Change |
|---|---|---|---|---|
| 1 | Santa MaríaLima region, Peru | 99 | 102 | +1.2 µg/m³+3% |
The 4 cities that got cleaner, biggest fall first
| # | City | 2025 | 2026 | Change |
|---|---|---|---|---|
| 1 | Santa Anita - Los FicusLima region, Peru | 96 | 81 | −8.2 µg/m³−25% |
| 2 | CallaoPeru | 76 | 72 | −2.0 µg/m³−9% |
| 3 | San Francisco De BorjaLima region, Peru | 76 | 72 | −1.9 µg/m³−9% |
| 4 | LimaLima Province, Peru | 80 | 77 | −1.4 µg/m³−6% |
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 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.