SmogRank / Chile / Valparaiso

Air quality in Quintero

Valparaiso, Chile. PM2.5 from 7 reference monitors, updated hourly. Only 4 of them reported in the last 24 hours.

27China AQI
Excellent

Latest hour (01:00 UTC), 1.2× the WHO 24-hour guideline. PM2.5 18.5 µg/m³.

Rank, worst first

24 hours–not enough data
7 days#245of 2,605, at 25 China AQI (17.4 µg/m³)
30 days#385of 2,626, at 29 China AQI (19.7 µg/m³)
This year#410of 2,447, at 34 China AQI (23.5 µg/m³)

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: 22.5 µg/m³2025-11-02: 22.5 µg/m³2025-11-03: 19.8 µg/m³2025-11-04: 19.8 µg/m³2025-11-05: 18.8 µg/m³2025-11-06: 17.5 µg/m³2025-11-07: 18.1 µg/m³2025-11-08: 20.2 µg/m³2025-11-09: 18.0 µg/m³2025-11-10: 18.3 µg/m³2025-11-11: 18.5 µg/m³2025-11-12: 19.5 µg/m³2025-11-13: 22.3 µg/m³2025-11-14: 22.3 µg/m³2025-11-15: 20.6 µg/m³2025-11-16: 18.5 µg/m³2025-11-17: 25.3 µg/m³2025-11-18: 29.3 µg/m³2025-11-19: 23.3 µg/m³2025-11-20: 19.6 µg/m³2025-11-21: 19.9 µg/m³2025-11-22: 21.7 µg/m³2025-11-23: 21.4 µg/m³2025-11-24: 18.4 µg/m³2025-11-25: 17.0 µg/m³2025-11-26: 16.1 µg/m³2025-11-27: 17.3 µg/m³2025-11-28: 15.2 µg/m³2025-11-29: 16.5 µg/m³2025-11-30: 16.2 µg/m³2025-12-01: 17.3 µg/m³2025-12-02: 18.8 µg/m³2025-12-03: 19.9 µg/m³2025-12-04: 17.2 µg/m³2025-12-05: 17.9 µg/m³2025-12-06: 20.8 µg/m³2025-12-07: 22.1 µg/m³2025-12-08: 20.1 µg/m³2025-12-09: 18.7 µg/m³2025-12-10: 17.5 µg/m³2025-12-11: 16.3 µg/m³2025-12-12: 17.3 µg/m³2025-12-13: 17.0 µg/m³2025-12-14: 17.0 µg/m³2025-12-15: 20.8 µg/m³2025-12-16: 27.0 µg/m³2025-12-17: 21.7 µg/m³2025-12-18: 19.2 µg/m³2025-12-19: 20.0 µg/m³2025-12-20: 15.9 µg/m³2025-12-21: 17.5 µg/m³2025-12-22: 17.0 µg/m³2025-12-23: 18.0 µg/m³2025-12-24: 18.9 µg/m³2025-12-25: 22.5 µg/m³2025-12-26: 22.0 µg/m³2025-12-27: 19.1 µg/m³2025-12-28: 19.4 µg/m³2025-12-29: 21.3 µg/m³2025-12-30: 21.2 µg/m³2025-12-31: 20.6 µg/m³2026-01-01: 19.2 µg/m³2026-01-02: 16.9 µg/m³2026-01-03: 16.3 µg/m³2026-01-04: 17.3 µg/m³2026-01-05: 17.8 µg/m³2026-01-06: 18.1 µg/m³2026-01-07: 17.8 µg/m³2026-01-08: 18.4 µg/m³2026-01-09: 21.3 µg/m³2026-01-10: 23.2 µg/m³2026-01-11: 19.9 µg/m³2026-01-12: 20.9 µg/m³2026-01-13: 20.4 µg/m³2026-01-14: 21.0 µg/m³2026-01-15: 20.5 µg/m³2026-01-16: 25.9 µg/m³2026-01-17: 25.4 µg/m³2026-01-18: 27.8 µg/m³2026-01-19: 36.4 µg/m³2026-01-20: 37.0 µg/m³2026-01-21: 28.9 µg/m³2026-01-22: 22.0 µg/m³2026-01-23: 22.5 µg/m³2026-01-24: 21.5 µg/m³2026-01-25: 19.1 µg/m³2026-01-26: 17.0 µg/m³2026-01-27: 17.1 µg/m³2026-01-28: 18.0 µg/m³2026-01-29: 19.2 µg/m³2026-01-30: 15.8 µg/m³2026-01-31: 15.4 µg/m³2026-02-01: 16.3 µg/m³2026-02-02: 14.3 µg/m³2026-02-03: 15.1 µg/m³2026-02-04: 14.3 µg/m³2026-02-05: 16.2 µg/m³2026-02-06: 20.9 µg/m³2026-02-07: 25.2 µg/m³2026-02-08: 22.2 µg/m³2026-02-09: 16.2 µg/m³2026-02-10: 18.3 µg/m³2026-02-11: 21.7 µg/m³2026-02-12: 28.1 µg/m³2026-02-13: 26.7 µg/m³2026-02-14: 25.0 µg/m³2026-02-15: 21.3 µg/m³2026-02-16: 21.8 µg/m³2026-02-17: 19.5 µg/m³2026-02-18: 24.6 µg/m³2026-02-19: 25.5 µg/m³2026-02-20: 23.4 µg/m³2026-02-21: 22.7 µg/m³2026-02-22: 20.3 µg/m³2026-02-23: 21.0 µg/m³2026-02-24: 20.7 µg/m³2026-02-25: 20.6 µg/m³2026-02-26: 20.5 µg/m³2026-02-27: 20.4 µg/m³2026-02-28: 17.3 µg/m³2026-03-01: 16.8 µg/m³2026-03-02: 16.8 µg/m³2026-03-03: 23.5 µg/m³2026-03-04: 24.9 µg/m³2026-03-05: 23.0 µg/m³2026-03-06: 24.7 µg/m³2026-03-07: 21.1 µg/m³2026-03-08: 18.3 µg/m³2026-03-09: 19.9 µg/m³2026-03-10: 24.6 µg/m³2026-03-11: 23.5 µg/m³2026-03-12: 22.9 µg/m³2026-03-13: 27.6 µg/m³2026-03-14: 24.7 µg/m³2026-03-15: 20.6 µg/m³2026-03-16: 17.1 µg/m³2026-03-17: 17.9 µg/m³2026-03-18: 22.3 µg/m³2026-03-19: 19.3 µg/m³2026-03-20: 17.2 µg/m³2026-03-21: 17.5 µg/m³2026-03-22: 17.6 µg/m³2026-03-23: 16.9 µg/m³2026-03-24: 21.0 µg/m³2026-03-25: 22.7 µg/m³2026-03-26: 24.3 µg/m³2026-03-27: 23.2 µg/m³2026-03-28: 29.5 µg/m³2026-03-29: 20.3 µg/m³2026-03-30: 19.3 µg/m³2026-03-31: 20.5 µg/m³2026-04-01: 21.6 µg/m³2026-04-02: 26.0 µg/m³2026-04-03: 28.0 µg/m³2026-04-04: 30.7 µg/m³2026-04-05: 23.9 µg/m³2026-04-06: 19.3 µg/m³2026-04-07: 22.9 µg/m³2026-04-08: 22.9 µg/m³2026-04-09: 22.2 µg/m³2026-04-10: 19.3 µg/m³2026-04-11: 20.1 µg/m³2026-04-12: 23.1 µg/m³2026-04-13: 23.7 µg/m³2026-04-14: 26.8 µg/m³2026-04-15: 25.8 µg/m³2026-04-16: 26.0 µg/m³2026-04-17: 20.4 µg/m³2026-04-18: 17.0 µg/m³2026-04-19: 20.3 µg/m³2026-04-20: 21.4 µg/m³2026-04-21: 21.0 µg/m³2026-04-22: 26.7 µg/m³2026-04-23: 24.7 µg/m³2026-04-24: 28.1 µg/m³2026-04-25: 26.2 µg/m³2026-04-26: 31.3 µg/m³2026-04-27: 28.0 µg/m³2026-04-28: 25.3 µg/m³2026-04-29: 19.1 µg/m³2026-04-30: 17.0 µg/m³2026-05-01: 20.5 µg/m³2026-05-02: 29.6 µg/m³2026-05-03: 28.1 µg/m³2026-05-04: 25.8 µg/m³2026-05-05: 18.2 µg/m³2026-05-06: 16.3 µg/m³2026-05-07: 20.0 µg/m³2026-05-08: 24.0 µg/m³2026-05-09: 19.9 µg/m³2026-05-10: 24.0 µg/m³2026-05-11: 21.3 µg/m³2026-05-12: 24.7 µg/m³2026-05-13: 35.3 µg/m³2026-05-14: 41.1 µg/m³2026-05-15: 49.3 µg/m³2026-05-16: 34.8 µg/m³2026-05-17: 29.7 µg/m³2026-05-18: 37.0 µg/m³2026-05-19: 40.3 µg/m³2026-05-20: 40.6 µg/m³2026-05-21: 42.5 µg/m³2026-05-22: 35.1 µg/m³2026-05-23: 37.7 µg/m³2026-05-24: 39.4 µg/m³2026-05-25: 45.3 µg/m³2026-05-26: 37.8 µg/m³2026-05-27: 30.3 µg/m³2026-05-28: 31.9 µg/m³2026-05-29: 24.6 µg/m³2026-05-30: 27.9 µg/m³2026-05-31: 25.5 µg/m³2026-06-01: 22.7 µg/m³2026-06-02: 26.3 µg/m³2026-06-03: 37.8 µg/m³2026-06-04: 43.6 µg/m³2026-06-05: 31.1 µg/m³2026-06-06: 27.1 µg/m³2026-06-07: 30.0 µg/m³2026-06-08: 39.0 µg/m³2026-06-09: 37.0 µg/m³2026-06-10: 26.9 µg/m³2026-06-11: 25.0 µg/m³2026-06-12: 27.7 µg/m³2026-06-13: 25.9 µg/m³2026-06-14: 31.5 µg/m³2026-06-15: 40.6 µg/m³2026-06-16: 44.5 µg/m³2026-06-17: 35.1 µg/m³2026-06-18: 24.2 µg/m³2026-06-19: 20.0 µg/m³2026-06-20: 24.3 µg/m³2026-06-21: 21.7 µg/m³2026-06-22: 22.0 µg/m³2026-06-23: 23.2 µg/m³2026-06-24: 30.8 µg/m³2026-06-25: 35.1 µg/m³2026-06-26: 29.6 µg/m³2026-06-27: 33.3 µg/m³2026-06-28: 32.3 µg/m³2026-06-29: 35.1 µg/m³2026-06-30: 30.2 µg/m³2026-07-01: 33.0 µg/m³2026-07-02: 25.4 µg/m³2026-07-03: 24.5 µg/m³2026-07-04: 27.3 µg/m³2026-07-05: 19.5 µg/m³2026-07-06: 25.0 µg/m³2026-07-07: 30.0 µg/m³2026-07-08: 28.6 µg/m³2026-07-09: 34.7 µg/m³2026-07-10: 41.2 µg/m³2026-07-11: 26.6 µg/m³2026-07-12: 23.2 µg/m³2026-07-13: 24.3 µg/m³2026-07-14: 22.7 µg/m³2026-07-15: 21.5 µg/m³2026-07-16: 19.3 µg/m³2026-07-17: 18.3 µg/m³2026-07-18: 17.5 µg/m³2026-07-19: 18.5 µg/m³2026-07-20: 19.6 µg/m³2026-07-21: 15.8 µg/m³2026-07-22: 17.3 µg/m³2026-07-23: 25.3 µg/m³2026-07-24: 22.4 µg/m³2026-07-25: 25.1 µg/m³2026-07-26: 26.6 µg/m³2026-07-27: 19.0 µg/m³2026-07-28: 18.5 µg/m³2026-07-29: 21.9 µg/m³2026-07-30: 23.1 µg/m³2026-07-31: 16.8 µg/m³2026-08-01: 19.8 µg/m³2026-08-02: 19.3 µg/m³2026-08-03: 18.5 µg/m³2026-08-04: 21.5 µg/m³2026-08-05: 20.3 µg/m³2026-08-06: 19.8 µg/m³2026-08-07: 19.7 µg/m³2026-08-08: 19.3 µg/m³2026-08-09: 18.8 µg/m³2026-08-10: 18.5 µg/m³2026-08-11: 23.2 µg/m³2026-08-12: 19.8 µg/m³2026-08-13: 24.5 µg/m³2026-08-14: 18.0 µg/m³2026-08-15: 17.0 µg/m³2026-08-16: 18.3 µg/m³2026-08-17: 20.3 µg/m³2026-08-18: 22.6 µg/m³2026-08-19: 24.4 µg/m³2026-08-20: 24.8 µg/m³2026-08-21: 24.8 µg/m³2026-08-22: 23.4 µg/m³2026-08-23: 20.4 µg/m³2026-08-24: 20.7 µg/m³2026-08-25: 18.0 µg/m³2026-08-26: 18.0 µg/m³2026-08-27: 18.5 µg/m³2026-08-28: 17.5 µg/m³2026-08-29: 19.4 µg/m³2026-08-30: 22.0 µg/m³2026-08-31: 17.2 µg/m³2026-09-01: 17.1 µg/m³2026-09-02: 19.0 µg/m³2026-09-03: 18.4 µg/m³2026-09-04: 20.6 µg/m³2026-09-05: 24.9 µg/m³2026-09-06: 22.3 µg/m³2026-09-07: 19.0 µg/m³2026-09-08: 17.5 µg/m³2026-09-09: 17.6 µg/m³2026-09-10: 18.4 µg/m³2026-09-11: 20.1 µg/m³2026-09-12: 19.1 µg/m³2026-09-13: 29.7 µg/m³2026-09-14: 20.4 µg/m³2026-09-15: 22.9 µg/m³2026-09-16: 23.4 µg/m³2026-09-17: 21.3 µg/m³2026-09-18: 21.4 µg/m³2026-09-19: 21.2 µg/m³2026-09-20: 17.3 µg/m³2026-09-21: 17.4 µg/m³2026-09-22: 19.8 µg/m³2026-09-23: 18.9 µg/m³2026-09-24: 17.8 µg/m³2026-09-25: 19.4 µg/m³2026-09-26: 22.0 µg/m³2026-09-27: 15.7 µg/m³2026-09-28: 15.3 µg/m³2026-09-29: 16.0 µg/m³2026-09-30: 16.5 µg/m³2026-10-01: 16.7 µg/m³
357 of 359 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
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

Last 4 days, hour by hour

15302026-10-01 22:00 UTC: 18.5 µg/m³2026-10-01 23:00 UTC: 18.5 µg/m³2026-10-02 00:00 UTC: 18.5 µg/m³2026-10-02 01:00 UTC: 18.5 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#217
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: 20.6 µg/m³Jan 2026: 21.2 µg/m³JanFeb 2025: 21.9 µg/m³Feb 2026: 20.7 µg/m³FebMar 2025: 21.9 µg/m³Mar 2026: 21.3 µg/m³MarApr 2025: 23.0 µg/m³Apr 2026: 23.6 µg/m³AprMay 2025: 27.9 µg/m³May 2026: 30.9 µg/m³MayJun 2025: 34.0 µg/m³Jun 2026: 30.5 µg/m³JunJul 2025: 32.6 µg/m³Jul 2026: 23.6 µg/m³JulAug 2025: 23.9 µg/m³Aug 2026: 20.3 µg/m³AugSep 2025: 22.6 µg/m³Sep 2026: 19.7 µg/m³SepOct 2025: 21.9 µg/m³OctNov 2025: 19.8 µg/m³NovDec 2025: 19.4 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 17.4 µg/m³17.420252025: 23.0 µg/m³23.0
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Valle AlegrePermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
Los MaitenesPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
La GredaPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
QuinteroPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
LoncuraPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
VentanasPermission requested (Chile MMA, SINCA, 2026-10-01)Chile - SINCAReference
Centro QuinteroPermission 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, Quintero, Chile, 2 Oct 2025 – 1 Oct 2026, smogrank.com/cl/quintero (accessed 2 Oct 2026).

Download chart (PNG)Embed a live widget

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

Other cities in Chile

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

Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the China AQI PM2.5 sub-index.