SmogRank / World / South America / Chile / Los Lagos Region

Most polluted cities in Los Lagos Region, Chile

3 measured cities, last 7 days; 3 above the WHO 24-hour guideline. Worst: Osorno at 39.6 µg/m³, #43 in the world.

Los Lagos Region: 3 measured citiesLos Ríos Region: 2 measured citiesAraucania: 2 measured citiesAysén: 2 measured cities#3 Puerto Montt: 23.8 µg/m³#2 Puerto Varas: 29.9 µg/m³#1 Osorno: 39.6 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Osorno 39.6 µg/m³ 30 µg/m³15 WHO 24-hour guideline0
Every measured city in Los Lagos Region, Chile, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Osorno 56
  2. 2Puerto Varas 43
  3. 3Puerto Montt 34
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

Estimated: cities without a monitor

Los Lagos Region cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Castro≈ 3 µg/m³Excellent
Ancud≈ 5 µg/m³Excellent
Calbuco≈ 3 µg/m³Excellent
Quellón≈ 3 µg/m³Excellent
Purranque≈ 3 µg/m³Excellent
Llanquihue≈ 3 µg/m³Excellent
Maullín≈ 4 µg/m³Excellent
Frutillar≈ 3 µg/m³Excellent

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SmogRank, most polluted cities in Los Lagos Region, Chile, PM2.5, last 7 days to 2 Oct 2026, 05:00 UTC, smogrank.com/cl/region/los-lagos-region?w=7d.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the China AQI PM2.5 sub-index.