SmogRank / Cleaner or dirtier / Peru
Peru: cleaner or dirtier, 2025
In Peru, 6 cities have enough days in both years to compare 2025 with the same days of 2024: 4 got dirtier and 2 cleaner.
The 4 cities that got dirtier, biggest rise first
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | CallaoPeru | 72 | 77 | +2.9 µg/m³+14% |
| 2 | Santa Anita - Los FicusLima region, Peru | 94 | 97 | +1.5 µg/m³+5% |
| 3 | Villa Poeta José Gálvez BarrenecheaLima region, Peru | 68 | 69 | +0.6 µg/m³+3% |
| 4 | San Francisco De BorjaLima region, Peru | 78 | 79 | +0.5 µg/m³+2% |
The 2 cities that got cleaner, biggest fall first
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | Santa MaríaLima region, Peru | 161 | 124 | −24.1 µg/m³−35% |
| 2 | LimaLima Province, Peru | 86 | 84 | −1.2 µg/m³−4% |
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.