Air quality by country
Air quality in Peru today
Updated
Good: average US AQI 46 across 21 cities Worst now: Tacna (63); cleanest: San Juan, Loreto (28).
Live US AQI, PM2.5 and ozone for cities across Peru, ranked from most polluted to cleanest.
- Average US AQI
- 46 Good
- Most polluted now
- Tacna AQI 63
- Cleanest now
- San Juan, Loreto AQI 28
- Cities above 100
- 0 unhealthy for sensitive groups or worse
Air quality in Peru today
Right now the modelled air quality in Peru averages a US AQI of 46 (Good) across the 21 cities we track. By category: 11 Good, 10 Moderate (of 21).
That is 19 points better than the worldwide average of 65 across 3,909 cities.
Tacna has the worst air at 63 with PM2.5 at 25 µg/m³, while San Juan, Loreto is cleanest at 28. No tracked city is above 100, the level where sensitive groups are advised to cut back outdoors.
Peru cities by AQI (most polluted first)
| City | Region | US AQI | Category | PM2.5 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Tacna | Tacna | 63 | Moderate | 24.6 | 62 |
| Arequipa | Arequipa | 62 | Moderate | 12.4 | 85 |
| Lima | Lima Province | 60 | Moderate | 15.2 | 61 |
| Callao | Callao | 60 | Moderate | 15.2 | 61 |
| Santa Anita - Los Ficus | Lima region | 60 | Moderate | 15.2 | 61 |
| San Francisco De Borja | Lima region | 60 | Moderate | 15.2 | 61 |
| Chiclayo | Lambayeque | 55 | Moderate | 11.8 | 52 |
| Trujillo | La Libertad | 52 | Moderate | 10.5 | 51 |
| Chimbote | Ancash | 52 | Moderate | 14 | 55 |
| Laredo, La Libertad | La Libertad | 52 | Moderate | 10.5 | 51 |
| Ica | Ica | 49 | Good | 9.5 | 54 |
| Piura | Piura | 39 | Good | 13.2 | 56 |
| San Martin | Piura | 39 | Good | 13.2 | 56 |
| Pucallpa | Ucayali | 36 | Good | 5.7 | 34 |
| San Fernando, Ucayali | Ucayali | 36 | Good | 5.7 | 34 |
| Cusco | Cuzco Department | 35 | Good | 1.3 | 89 |
| Santiago, Cuzco Department | Cuzco Department | 35 | Good | 1.3 | 89 |
| Santa Ana, Cuzco Department | Cuzco Department | 35 | Good | 6 | 56 |
| Huancayo | Junin | 31 | Good | 1.3 | 69 |
| Iquitos | Loreto | 28 | Good | 5.1 | 29 |
| San Juan, Loreto | Loreto | 28 | Good | 5.1 | 29 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).