SmogRank / Chile / Valparaiso

Air quality in Quillota

Valparaiso, Chile. PM2.5 from 3 reference monitors, updated hourly. Only 2 of them reported in the last 24 hours.

67US AQI
Moderate

Latest hour (02:00 UTC), 1.2× the WHO 24-hour guideline. PM2.5 17.5 µg/m³.

Rank, worst first

24 hours–not enough data
7 days#270of 2,604, at 65 US AQI (16.6 µg/m³)
30 days#396of 2,624, at 69 US AQI (18.9 µg/m³)
This year#394of 2,447, at 79 US AQI (24.2 µg/m³)

Why it ranks here

Seasonal. Over the past year its worst months were May, June, July, averaging up to 36.3 µg/m³ against 16.5 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Quillota'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: 16.1 µg/m³2025-11-02: 17.7 µg/m³2025-11-03: 17.9 µg/m³2025-11-04: 15.2 µg/m³2025-11-05: 15.2 µg/m³2025-11-06: 16.6 µg/m³2025-11-07: 17.2 µg/m³2025-11-08: 15.8 µg/m³2025-11-09: 15.0 µg/m³2025-11-10: 14.2 µg/m³2025-11-11: 14.3 µg/m³2025-11-12: 14.5 µg/m³2025-11-13: 17.0 µg/m³2025-11-14: 19.9 µg/m³2025-11-15: 19.7 µg/m³2025-11-16: 15.1 µg/m³2025-11-17: 14.9 µg/m³2025-11-18: 18.1 µg/m³2025-11-19: 18.1 µg/m³2025-11-20: 19.4 µg/m³2025-11-21: 18.0 µg/m³2025-11-22: 19.5 µg/m³2025-11-23: 19.9 µg/m³2025-11-24: 16.3 µg/m³2025-11-25: 14.6 µg/m³2025-11-26: 13.8 µg/m³2025-11-27: 13.8 µg/m³2025-11-28: 14.7 µg/m³2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: 17.0 µg/m³2025-12-03: 18.9 µg/m³2025-12-04: 17.3 µg/m³2025-12-05: 16.7 µg/m³2025-12-06: 22.4 µg/m³2025-12-07: 20.3 µg/m³2025-12-08: 17.9 µg/m³2025-12-09: 20.0 µg/m³2025-12-10: 17.7 µg/m³2025-12-11: 15.2 µg/m³2025-12-12: 15.9 µg/m³2025-12-13: 17.6 µg/m³2025-12-14: 16.7 µg/m³2025-12-15: 17.0 µg/m³2025-12-16: 23.3 µg/m³2025-12-17: 20.8 µg/m³2025-12-18: 17.6 µg/m³2025-12-19: 20.3 µg/m³2025-12-20: 16.0 µg/m³2025-12-21: 15.0 µg/m³2025-12-22: 14.4 µg/m³2025-12-23: 15.9 µg/m³2025-12-24: 16.3 µg/m³2025-12-25: 20.0 µg/m³2025-12-26: 19.0 µg/m³2025-12-27: 15.9 µg/m³2025-12-28: 18.9 µg/m³2025-12-29: 19.7 µg/m³2025-12-30: 21.8 µg/m³2025-12-31: 20.1 µg/m³2026-01-01: 21.3 µg/m³2026-01-02: 16.3 µg/m³2026-01-03: 18.3 µg/m³2026-01-04: 16.7 µg/m³2026-01-05: 15.3 µg/m³2026-01-06: 16.1 µg/m³2026-01-07: 16.2 µg/m³2026-01-08: 17.3 µg/m³2026-01-09: 18.7 µg/m³2026-01-10: 23.0 µg/m³2026-01-11: 21.2 µg/m³2026-01-12: 20.6 µg/m³2026-01-13: 18.4 µg/m³2026-01-14: 16.7 µg/m³2026-01-15: 17.3 µg/m³2026-01-16: 21.1 µg/m³2026-01-17: 22.1 µg/m³2026-01-18: 25.5 µg/m³2026-01-19: 29.7 µg/m³2026-01-20: 31.3 µg/m³2026-01-21: 21.7 µg/m³2026-01-22: 18.9 µg/m³2026-01-23: 19.3 µg/m³2026-01-24: 19.1 µg/m³2026-01-25: 18.3 µg/m³2026-01-26: 15.8 µg/m³2026-01-27: 15.1 µg/m³2026-01-28: 18.3 µg/m³2026-01-29: 16.6 µg/m³2026-01-30: 15.0 µg/m³2026-01-31: 15.3 µg/m³2026-02-01: 16.0 µg/m³2026-02-02: 14.3 µg/m³2026-02-03: 13.7 µg/m³2026-02-04: no data2026-02-05: 13.2 µg/m³2026-02-06: 17.5 µg/m³2026-02-07: 16.4 µg/m³2026-02-08: 20.0 µg/m³2026-02-09: no data2026-02-10: no data2026-02-11: 14.8 µg/m³2026-02-12: 17.0 µg/m³2026-02-13: no data2026-02-14: 19.8 µg/m³2026-02-15: 17.3 µg/m³2026-02-16: 15.3 µg/m³2026-02-17: 15.8 µg/m³2026-02-18: 14.8 µg/m³2026-02-19: 16.8 µg/m³2026-02-20: 19.5 µg/m³2026-02-21: 18.5 µg/m³2026-02-22: 20.0 µg/m³2026-02-23: 20.1 µg/m³2026-02-24: 21.0 µg/m³2026-02-25: 20.3 µg/m³2026-02-26: 17.7 µg/m³2026-02-27: 18.7 µg/m³2026-02-28: 16.2 µg/m³2026-03-01: 16.4 µg/m³2026-03-02: 13.8 µg/m³2026-03-03: 14.9 µg/m³2026-03-04: 17.5 µg/m³2026-03-05: 19.7 µg/m³2026-03-06: 22.0 µg/m³2026-03-07: 21.1 µg/m³2026-03-08: 16.9 µg/m³2026-03-09: 17.6 µg/m³2026-03-10: 18.0 µg/m³2026-03-11: 19.4 µg/m³2026-03-12: 19.5 µg/m³2026-03-13: 21.8 µg/m³2026-03-14: 22.2 µg/m³2026-03-15: 20.6 µg/m³2026-03-16: 14.9 µg/m³2026-03-17: 14.5 µg/m³2026-03-18: 16.5 µg/m³2026-03-19: 18.3 µg/m³2026-03-20: 16.6 µg/m³2026-03-21: 16.5 µg/m³2026-03-22: 16.2 µg/m³2026-03-23: 15.8 µg/m³2026-03-24: 17.8 µg/m³2026-03-25: 17.5 µg/m³2026-03-26: 19.4 µg/m³2026-03-27: 22.6 µg/m³2026-03-28: 28.2 µg/m³2026-03-29: 18.6 µg/m³2026-03-30: 20.4 µg/m³2026-03-31: 21.5 µg/m³2026-04-01: 21.3 µg/m³2026-04-02: 23.9 µg/m³2026-04-03: 26.5 µg/m³2026-04-04: 26.3 µg/m³2026-04-05: 22.6 µg/m³2026-04-06: 16.9 µg/m³2026-04-07: 22.0 µg/m³2026-04-08: 24.0 µg/m³2026-04-09: 24.3 µg/m³2026-04-10: 21.9 µg/m³2026-04-11: 20.3 µg/m³2026-04-12: 20.1 µg/m³2026-04-13: 23.6 µg/m³2026-04-14: 30.2 µg/m³2026-04-15: 22.8 µg/m³2026-04-16: 23.3 µg/m³2026-04-17: 22.3 µg/m³2026-04-18: 16.7 µg/m³2026-04-19: 16.0 µg/m³2026-04-20: 15.6 µg/m³2026-04-21: 17.0 µg/m³2026-04-22: 21.5 µg/m³2026-04-23: 22.2 µg/m³2026-04-24: 22.3 µg/m³2026-04-25: 21.6 µg/m³2026-04-26: 20.1 µg/m³2026-04-27: 19.4 µg/m³2026-04-28: 24.0 µg/m³2026-04-29: 19.8 µg/m³2026-04-30: 19.9 µg/m³2026-05-01: 19.4 µg/m³2026-05-02: 23.4 µg/m³2026-05-03: 25.4 µg/m³2026-05-04: 19.0 µg/m³2026-05-05: 20.3 µg/m³2026-05-06: 23.9 µg/m³2026-05-07: 18.3 µg/m³2026-05-08: 19.1 µg/m³2026-05-09: 19.7 µg/m³2026-05-10: 26.6 µg/m³2026-05-11: 29.5 µg/m³2026-05-12: 26.5 µg/m³2026-05-13: 38.6 µg/m³2026-05-14: 53.1 µg/m³2026-05-15: 56.5 µg/m³2026-05-16: 39.3 µg/m³2026-05-17: 31.0 µg/m³2026-05-18: 37.2 µg/m³2026-05-19: 44.1 µg/m³2026-05-20: 52.6 µg/m³2026-05-21: 53.3 µg/m³2026-05-22: 42.5 µg/m³2026-05-23: 54.1 µg/m³2026-05-24: 48.8 µg/m³2026-05-25: 38.7 µg/m³2026-05-26: 31.0 µg/m³2026-05-27: 36.6 µg/m³2026-05-28: 27.0 µg/m³2026-05-29: 29.7 µg/m³2026-05-30: 42.4 µg/m³2026-05-31: 43.1 µg/m³2026-06-01: 35.2 µg/m³2026-06-02: 38.4 µg/m³2026-06-03: 45.3 µg/m³2026-06-04: 36.0 µg/m³2026-06-05: 40.5 µg/m³2026-06-06: 33.8 µg/m³2026-06-07: 32.2 µg/m³2026-06-08: 39.2 µg/m³2026-06-09: 46.8 µg/m³2026-06-10: 52.9 µg/m³2026-06-11: 25.7 µg/m³2026-06-12: 27.6 µg/m³2026-06-13: 31.7 µg/m³2026-06-14: 33.4 µg/m³2026-06-15: 58.4 µg/m³2026-06-16: 65.1 µg/m³2026-06-17: 57.4 µg/m³2026-06-18: 36.0 µg/m³2026-06-19: 23.0 µg/m³2026-06-20: 28.9 µg/m³2026-06-21: 22.5 µg/m³2026-06-22: 20.1 µg/m³2026-06-23: 25.6 µg/m³2026-06-24: 31.5 µg/m³2026-06-25: 33.9 µg/m³2026-06-26: 36.6 µg/m³2026-06-27: 43.6 µg/m³2026-06-28: 32.9 µg/m³2026-06-29: 28.2 µg/m³2026-06-30: 26.5 µg/m³2026-07-01: 31.3 µg/m³2026-07-02: 30.3 µg/m³2026-07-03: 34.1 µg/m³2026-07-04: 31.5 µg/m³2026-07-05: 28.5 µg/m³2026-07-06: 21.9 µg/m³2026-07-07: 27.3 µg/m³2026-07-08: 37.5 µg/m³2026-07-09: 45.5 µg/m³2026-07-10: 36.3 µg/m³2026-07-11: 30.7 µg/m³2026-07-12: 32.8 µg/m³2026-07-13: 46.6 µg/m³2026-07-14: 39.0 µg/m³2026-07-15: 31.4 µg/m³2026-07-16: 28.5 µg/m³2026-07-17: 16.2 µg/m³2026-07-18: no data2026-07-19: 31.1 µg/m³2026-07-20: 35.7 µg/m³2026-07-21: 20.0 µg/m³2026-07-22: 21.8 µg/m³2026-07-23: 32.0 µg/m³2026-07-24: 22.7 µg/m³2026-07-25: 27.9 µg/m³2026-07-26: 31.2 µg/m³2026-07-27: 23.7 µg/m³2026-07-28: 21.2 µg/m³2026-07-29: 21.9 µg/m³2026-07-30: 21.7 µg/m³2026-07-31: 16.7 µg/m³2026-08-01: 19.0 µg/m³2026-08-02: 25.8 µg/m³2026-08-03: 22.8 µg/m³2026-08-04: 24.1 µg/m³2026-08-05: 24.8 µg/m³2026-08-06: 22.0 µg/m³2026-08-07: 17.2 µg/m³2026-08-08: 20.2 µg/m³2026-08-09: 20.9 µg/m³2026-08-10: 19.3 µg/m³2026-08-11: 23.9 µg/m³2026-08-12: 30.6 µg/m³2026-08-13: 24.3 µg/m³2026-08-14: 19.4 µg/m³2026-08-15: 20.6 µg/m³2026-08-16: 19.1 µg/m³2026-08-17: 20.1 µg/m³2026-08-18: 19.1 µg/m³2026-08-19: 20.1 µg/m³2026-08-20: 23.9 µg/m³2026-08-21: 22.5 µg/m³2026-08-22: 21.5 µg/m³2026-08-23: 25.6 µg/m³2026-08-24: 26.3 µg/m³2026-08-25: 19.8 µg/m³2026-08-26: 22.1 µg/m³2026-08-27: 19.6 µg/m³2026-08-28: 15.4 µg/m³2026-08-29: 17.5 µg/m³2026-08-30: 18.9 µg/m³2026-08-31: 15.5 µg/m³2026-09-01: 17.6 µg/m³2026-09-02: 21.2 µg/m³2026-09-03: 18.4 µg/m³2026-09-04: 16.4 µg/m³2026-09-05: 19.3 µg/m³2026-09-06: 21.8 µg/m³2026-09-07: 20.6 µg/m³2026-09-08: 17.0 µg/m³2026-09-09: 18.3 µg/m³2026-09-10: 17.8 µg/m³2026-09-11: 16.9 µg/m³2026-09-12: 16.0 µg/m³2026-09-13: 21.7 µg/m³2026-09-14: 22.1 µg/m³2026-09-15: 23.3 µg/m³2026-09-16: 21.9 µg/m³2026-09-17: 23.8 µg/m³2026-09-18: 22.5 µg/m³2026-09-19: 23.7 µg/m³2026-09-20: 17.2 µg/m³2026-09-21: 16.1 µg/m³2026-09-22: 16.9 µg/m³2026-09-23: 18.3 µg/m³2026-09-24: 20.2 µg/m³2026-09-25: 17.6 µg/m³2026-09-26: 18.0 µg/m³2026-09-27: 16.4 µg/m³2026-09-28: 14.7 µg/m³2026-09-29: 15.4 µg/m³2026-09-30: 17.4 µg/m³2026-10-01: 16.6 µg/m³
327 of 351 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
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

Last 4 days, hour by hour

15302026-10-01 22:00 UTC: 17.0 µg/m³2026-10-01 23:00 UTC: 17.0 µg/m³2026-10-02 00:00 UTC: 17.0 µg/m³2026-10-02 01:00 UTC: 17.5 µg/m³2026-10-02 02:00 UTC: 17.5 µg/m³Sep 29Sep 30Oct 1Oct 2
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#181
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: 20.2 µg/m³Jan 2026: 19.2 µg/m³JanFeb 2025: 23.4 µg/m³Feb 2026: 17.3 µg/m³FebMar 2025: 20.9 µg/m³Mar 2026: 18.6 µg/m³MarApr 2025: 24.4 µg/m³Apr 2026: 21.6 µg/m³AprMay 2025: 31.6 µg/m³May 2026: 34.5 µg/m³MayJun 2026: 36.3 µg/m³JunJul 2025: 39.4 µg/m³Jul 2026: 29.2 µg/m³JulAug 2025: 24.0 µg/m³Aug 2026: 21.4 µg/m³AugSep 2025: 19.3 µg/m³Sep 2026: 19.0 µg/m³SepOct 2025: 18.3 µg/m³OctNov 2025: 16.5 µg/m³NovDec 2025: 18.2 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 16.6 µg/m³16.620252025: 18.9 µg/m³18.9
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
La PalmaPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
Cuerpo de Bomberos Permission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
San PedroPermission 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, Quillota, Chile, 2 Oct 2025 – 1 Oct 2026, smogrank.com/cl/quillota (accessed 2 Oct 2026).

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Other cities in Chile

30-day averages, US AQI. All of Chile.

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