SmogRank / Chile / Maule Region

Air quality in Cauquenes

Maule Region, Chile. PM2.5 from 1 reference monitor, updated hourly.

3DAQI
Low

Latest hour (00:00 UTC), 1.7× the WHO 24-hour guideline. PM2.5 26.0 µg/m³.

Rank, worst first

24 hours–not enough data
7 days#204of 2,608, at 2 DAQI (19.3 µg/m³)
30 days#344of 2,627, at 2 DAQI (22.0 µg/m³)
This year#299of 2,447, at 3 DAQI (30.2 µg/m³)

Why it ranks here

Seasonal. Over the past year its worst months were May, June, July, averaging up to 45.6 µg/m³ against 12.6 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Cauquenes's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: no data2025-11-02: no data2025-11-03: no data2025-11-04: 11.4 µg/m³2025-11-05: 12.5 µg/m³2025-11-06: 17.3 µg/m³2025-11-07: 15.2 µg/m³2025-11-08: 12.8 µg/m³2025-11-09: 12.2 µg/m³2025-11-10: 12.1 µg/m³2025-11-11: no data2025-11-12: 11.2 µg/m³2025-11-13: no data2025-11-14: 15.3 µg/m³2025-11-15: 14.9 µg/m³2025-11-16: 11.3 µg/m³2025-11-17: no data2025-11-18: no data2025-11-19: no data2025-11-20: 11.7 µg/m³2025-11-21: no data2025-11-22: 15.9 µg/m³2025-11-23: 16.3 µg/m³2025-11-24: 12.9 µg/m³2025-11-25: no data2025-11-26: 15.5 µg/m³2025-11-27: 13.1 µg/m³2025-11-28: 11.4 µg/m³2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: no data2025-12-03: no data2025-12-04: no data2025-12-05: no data2025-12-06: 12.6 µg/m³2025-12-07: 16.0 µg/m³2025-12-08: 14.4 µg/m³2025-12-09: 13.5 µg/m³2025-12-10: 12.6 µg/m³2025-12-11: no data2025-12-12: 11.6 µg/m³2025-12-13: no data2025-12-14: 11.5 µg/m³2025-12-15: no data2025-12-16: no data2025-12-17: no data2025-12-18: no data2025-12-19: 13.7 µg/m³2025-12-20: 12.4 µg/m³2025-12-21: 11.1 µg/m³2025-12-22: no data2025-12-23: no data2025-12-24: 11.6 µg/m³2025-12-25: no data2025-12-26: 11.8 µg/m³2025-12-27: 11.3 µg/m³2025-12-28: no data2025-12-29: 12.5 µg/m³2025-12-30: no data2025-12-31: 11.7 µg/m³2026-01-01: no data2026-01-02: no data2026-01-03: no data2026-01-04: no data2026-01-05: 11.0 µg/m³2026-01-06: 11.5 µg/m³2026-01-07: no data2026-01-08: 13.1 µg/m³2026-01-09: 15.2 µg/m³2026-01-10: 13.1 µg/m³2026-01-11: 11.2 µg/m³2026-01-12: no data2026-01-13: no data2026-01-14: 20.1 µg/m³2026-01-15: 12.5 µg/m³2026-01-16: 15.0 µg/m³2026-01-17: 17.4 µg/m³2026-01-18: 41.4 µg/m³2026-01-19: 87.8 µg/m³2026-01-20: 66.5 µg/m³2026-01-21: 38.7 µg/m³2026-01-22: 20.0 µg/m³2026-01-23: 15.1 µg/m³2026-01-24: 14.9 µg/m³2026-01-25: 12.2 µg/m³2026-01-26: 12.1 µg/m³2026-01-27: 12.3 µg/m³2026-01-28: no data2026-01-29: 12.8 µg/m³2026-01-30: 12.2 µg/m³2026-01-31: 12.8 µg/m³2026-02-01: 12.3 µg/m³2026-02-02: 11.4 µg/m³2026-02-03: no data2026-02-04: no data2026-02-05: no data2026-02-06: no data2026-02-07: 12.6 µg/m³2026-02-08: 11.3 µg/m³2026-02-09: no data2026-02-10: no data2026-02-11: no data2026-02-12: no data2026-02-13: no data2026-02-14: no data2026-02-15: no data2026-02-16: no data2026-02-17: 11.9 µg/m³2026-02-18: 11.4 µg/m³2026-02-19: 11.5 µg/m³2026-02-20: 15.4 µg/m³2026-02-21: 17.0 µg/m³2026-02-22: 15.0 µg/m³2026-02-23: 13.0 µg/m³2026-02-24: no data2026-02-25: 12.8 µg/m³2026-02-26: no data2026-02-27: 12.1 µg/m³2026-02-28: no data2026-03-01: 11.4 µg/m³2026-03-02: 11.4 µg/m³2026-03-03: 11.5 µg/m³2026-03-04: no data2026-03-05: no data2026-03-06: 14.6 µg/m³2026-03-07: 13.3 µg/m³2026-03-08: 12.2 µg/m³2026-03-09: no data2026-03-10: 12.6 µg/m³2026-03-11: 13.7 µg/m³2026-03-12: 12.8 µg/m³2026-03-13: 11.9 µg/m³2026-03-14: 14.0 µg/m³2026-03-15: 11.6 µg/m³2026-03-16: no data2026-03-17: no data2026-03-18: 12.4 µg/m³2026-03-19: no data2026-03-20: 12.5 µg/m³2026-03-21: no data2026-03-22: no data2026-03-23: 11.8 µg/m³2026-03-24: 11.6 µg/m³2026-03-25: no data2026-03-26: 16.4 µg/m³2026-03-27: 19.5 µg/m³2026-03-28: no data2026-03-29: no data2026-03-30: no data2026-03-31: 17.8 µg/m³2026-04-01: 16.5 µg/m³2026-04-02: 19.7 µg/m³2026-04-03: 16.4 µg/m³2026-04-04: 15.1 µg/m³2026-04-05: 17.0 µg/m³2026-04-06: 17.7 µg/m³2026-04-07: 19.3 µg/m³2026-04-08: 21.6 µg/m³2026-04-09: 25.7 µg/m³2026-04-10: 33.5 µg/m³2026-04-11: 24.7 µg/m³2026-04-12: 25.1 µg/m³2026-04-13: 29.1 µg/m³2026-04-14: 28.3 µg/m³2026-04-15: 25.8 µg/m³2026-04-16: 33.3 µg/m³2026-04-17: 20.4 µg/m³2026-04-18: 17.1 µg/m³2026-04-19: 16.8 µg/m³2026-04-20: 19.0 µg/m³2026-04-21: 26.4 µg/m³2026-04-22: 22.0 µg/m³2026-04-23: 22.9 µg/m³2026-04-24: 26.6 µg/m³2026-04-25: 20.3 µg/m³2026-04-26: 19.2 µg/m³2026-04-27: 21.1 µg/m³2026-04-28: 27.6 µg/m³2026-04-29: 20.1 µg/m³2026-04-30: 32.5 µg/m³2026-05-01: 26.9 µg/m³2026-05-02: 24.3 µg/m³2026-05-03: 32.2 µg/m³2026-05-04: 37.7 µg/m³2026-05-05: 37.5 µg/m³2026-05-06: 20.6 µg/m³2026-05-07: 26.0 µg/m³2026-05-08: 27.5 µg/m³2026-05-09: 23.8 µg/m³2026-05-10: 29.5 µg/m³2026-05-11: 36.5 µg/m³2026-05-12: 34.7 µg/m³2026-05-13: 50.5 µg/m³2026-05-14: 40.3 µg/m³2026-05-15: 38.9 µg/m³2026-05-16: 23.0 µg/m³2026-05-17: 31.3 µg/m³2026-05-18: 40.3 µg/m³2026-05-19: 63.0 µg/m³2026-05-20: 80.6 µg/m³2026-05-21: 77.9 µg/m³2026-05-22: 55.3 µg/m³2026-05-23: 48.6 µg/m³2026-05-24: 62.4 µg/m³2026-05-25: 59.7 µg/m³2026-05-26: 52.4 µg/m³2026-05-27: 52.1 µg/m³2026-05-28: 37.1 µg/m³2026-05-29: 51.5 µg/m³2026-05-30: 55.0 µg/m³2026-05-31: 39.4 µg/m³2026-06-01: 39.3 µg/m³2026-06-02: 51.5 µg/m³2026-06-03: 36.7 µg/m³2026-06-04: 40.2 µg/m³2026-06-05: 43.3 µg/m³2026-06-06: 42.1 µg/m³2026-06-07: 37.7 µg/m³2026-06-08: 33.3 µg/m³2026-06-09: 39.7 µg/m³2026-06-10: 27.2 µg/m³2026-06-11: 25.9 µg/m³2026-06-12: 42.2 µg/m³2026-06-13: 54.1 µg/m³2026-06-14: 43.8 µg/m³2026-06-15: 45.8 µg/m³2026-06-16: 63.1 µg/m³2026-06-17: 68.2 µg/m³2026-06-18: 62.5 µg/m³2026-06-19: 60.4 µg/m³2026-06-20: 33.4 µg/m³2026-06-21: 34.6 µg/m³2026-06-22: 35.2 µg/m³2026-06-23: 41.0 µg/m³2026-06-24: 58.4 µg/m³2026-06-25: 76.8 µg/m³2026-06-26: 71.8 µg/m³2026-06-27: 40.0 µg/m³2026-06-28: 48.5 µg/m³2026-06-29: 29.8 µg/m³2026-06-30: 41.3 µg/m³2026-07-01: 56.9 µg/m³2026-07-02: 62.3 µg/m³2026-07-03: 70.9 µg/m³2026-07-04: 51.8 µg/m³2026-07-05: 60.4 µg/m³2026-07-06: 63.9 µg/m³2026-07-07: 92.0 µg/m³2026-07-08: 72.6 µg/m³2026-07-09: 36.9 µg/m³2026-07-10: 30.8 µg/m³2026-07-11: 25.6 µg/m³2026-07-12: 44.8 µg/m³2026-07-13: 46.4 µg/m³2026-07-14: 48.8 µg/m³2026-07-15: 19.0 µg/m³2026-07-16: 19.5 µg/m³2026-07-17: 28.0 µg/m³2026-07-18: 23.9 µg/m³2026-07-19: 23.1 µg/m³2026-07-20: 32.0 µg/m³2026-07-21: 33.4 µg/m³2026-07-22: 20.0 µg/m³2026-07-23: 23.7 µg/m³2026-07-24: 30.0 µg/m³2026-07-25: 26.6 µg/m³2026-07-26: 22.0 µg/m³2026-07-27: 18.0 µg/m³2026-07-28: 22.5 µg/m³2026-07-29: 40.5 µg/m³2026-07-30: 43.5 µg/m³2026-07-31: 20.2 µg/m³2026-08-01: 21.8 µg/m³2026-08-02: 20.6 µg/m³2026-08-03: 31.5 µg/m³2026-08-04: 27.0 µg/m³2026-08-05: 32.9 µg/m³2026-08-06: 25.5 µg/m³2026-08-07: 33.4 µg/m³2026-08-08: 32.7 µg/m³2026-08-09: 30.0 µg/m³2026-08-10: 29.2 µg/m³2026-08-11: 46.0 µg/m³2026-08-12: 50.3 µg/m³2026-08-13: 56.8 µg/m³2026-08-14: 39.4 µg/m³2026-08-15: 21.1 µg/m³2026-08-16: 26.5 µg/m³2026-08-17: 24.5 µg/m³2026-08-18: 39.2 µg/m³2026-08-19: 37.3 µg/m³2026-08-20: 34.0 µg/m³2026-08-21: 29.3 µg/m³2026-08-22: 37.1 µg/m³2026-08-23: 39.2 µg/m³2026-08-24: 51.1 µg/m³2026-08-25: 43.7 µg/m³2026-08-26: 26.3 µg/m³2026-08-27: 33.1 µg/m³2026-08-28: 22.4 µg/m³2026-08-29: 22.5 µg/m³2026-08-30: 28.6 µg/m³2026-08-31: 32.9 µg/m³2026-09-01: 25.4 µg/m³2026-09-02: 23.4 µg/m³2026-09-03: 32.6 µg/m³2026-09-04: 19.7 µg/m³2026-09-05: 17.3 µg/m³2026-09-06: 19.6 µg/m³2026-09-07: 25.1 µg/m³2026-09-08: 27.6 µg/m³2026-09-09: 27.2 µg/m³2026-09-10: 27.7 µg/m³2026-09-11: 22.2 µg/m³2026-09-12: 22.7 µg/m³2026-09-13: 23.5 µg/m³2026-09-14: 27.7 µg/m³2026-09-15: 25.2 µg/m³2026-09-16: 21.8 µg/m³2026-09-17: 20.4 µg/m³2026-09-18: 21.9 µg/m³2026-09-19: 21.3 µg/m³2026-09-20: 17.0 µg/m³2026-09-21: 21.1 µg/m³2026-09-22: 17.0 µg/m³2026-09-23: 22.0 µg/m³2026-09-24: 22.0 µg/m³2026-09-25: 17.1 µg/m³2026-09-26: 19.3 µg/m³2026-09-27: 17.6 µg/m³2026-09-28: 17.1 µg/m³2026-09-29: 17.1 µg/m³2026-09-30: 21.5 µg/m³2026-10-01: 25.4 µg/m³
207 of 289 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Low1–3
Moderate4–6
High7–9
Very high10

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Last 4 days, hour by hour

15302026-10-01 22:00 UTC: 27.0 µg/m³2026-10-02 00:00 UTC: 26.0 µg/m³Sep 29Sep 30Oct 1
Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Where it stood each day

Top 10Top 100#1#10#100#1,000#2,835NovDecJanFebMarAprMayJunJulAugSep#91
Its rank on each day's world board, #1 being the most polluted city that day. The scale is logarithmic: each step down is ten times as many cities. See it among every city.

2026 against 2025, month by month

15Jan 2025: 16.1 µg/m³Jan 2026: 21.7 µg/m³JanFeb 2025: 20.2 µg/m³Feb 2026: 12.9 µg/m³FebMar 2025: 19.1 µg/m³Mar 2026: 13.3 µg/m³MarApr 2025: 22.5 µg/m³Apr 2026: 22.7 µg/m³AprMay 2025: 33.0 µg/m³May 2026: 42.5 µg/m³MayJun 2025: 48.7 µg/m³Jun 2026: 45.6 µg/m³JunJul 2025: 41.8 µg/m³Jul 2026: 39.0 µg/m³JulAug 2025: 25.4 µg/m³Aug 2026: 33.1 µg/m³AugSep 2025: 17.0 µg/m³Sep 2026: 22.0 µg/m³SepOct 2025: 13.5 µg/m³OctNov 2025: 13.5 µg/m³NovDec 2025: 12.6 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 19.3 µg/m³19.320252025: 15.9 µg/m³15.9
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Cauquenes SivicaPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Use this page

SmogRank, PM2.5 daily means, Cauquenes, Chile, 2 Oct 2025 – 1 Oct 2026, smogrank.com/cl/cauquenes (accessed 2 Oct 2026).

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Other cities in Chile

30-day averages, DAQI. All of Chile.

Updated 2026-10-02 03:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the UK DAQI PM2.5 sub-index.