SmogRank / Chile / Maule Region

Air quality in Linares

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

94US AQI
Moderate

Latest hour (22:00 UTC), 2.1× the WHO 24-hour guideline. PM2.5 32.0 µg/m³.

Rank, worst first

24 hours–not enough data
7 days–not enough data
30 days–not enough data
This year–not enough data

Why it ranks here

Seasonal. Over the past year its worst months were May, averaging up to 79.3 µg/m³ against 12.4 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

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

The last 12 months, day by day

1102031Oct 2025NovDecJan 2026FebMarAprMayJunJulAugSep2025-10-01: 13.7 µg/m³2025-10-02: 24.1 µg/m³2025-10-03: 21.0 µg/m³2025-10-04: 12.8 µg/m³2025-10-05: 12.5 µg/m³2025-10-06: no data2025-10-07: no data2025-10-08: 12.0 µg/m³2025-10-09: 16.0 µg/m³2025-10-10: 18.3 µg/m³2025-10-11: 12.5 µg/m³2025-10-12: no data2025-10-13: no data2025-10-14: 12.6 µg/m³2025-10-15: 11.4 µg/m³2025-10-16: no data2025-10-17: 13.3 µg/m³2025-10-18: 19.3 µg/m³2025-10-19: no data2025-10-20: 11.9 µg/m³2025-10-21: 11.6 µg/m³2025-10-22: 12.6 µg/m³2025-10-23: no data2025-10-24: no data2025-10-25: no data2025-10-26: no data2025-10-27: no data2025-10-28: no data2025-10-29: 13.7 µg/m³2025-10-30: 14.5 µg/m³2025-10-31: 12.6 µg/m³2025-11-01: no data2025-11-02: no data2025-11-03: 12.3 µg/m³2025-11-04: no data2025-11-05: 13.5 µg/m³2025-11-06: 14.9 µg/m³2025-11-07: 13.8 µg/m³2025-11-08: 12.8 µg/m³2025-11-09: 13.5 µg/m³2025-11-10: 11.9 µg/m³2025-11-11: no data2025-11-12: no data2025-11-13: 12.6 µg/m³2025-11-14: 13.1 µg/m³2025-11-15: no data2025-11-16: 12.1 µg/m³2025-11-17: 12.6 µg/m³2025-11-18: 13.8 µg/m³2025-11-19: 14.3 µg/m³2025-11-20: 12.8 µg/m³2025-11-21: no data2025-11-22: 16.8 µg/m³2025-11-23: 15.2 µg/m³2025-11-24: 15.0 µg/m³2025-11-25: 16.7 µg/m³2025-11-26: 14.9 µg/m³2025-11-27: 13.3 µg/m³2025-11-28: 12.4 µg/m³2025-11-29: 13.2 µg/m³2025-11-30: 12.3 µg/m³2025-12-01: 11.9 µg/m³2025-12-02: 13.6 µg/m³2025-12-03: 12.8 µg/m³2025-12-04: no data2025-12-05: no data2025-12-06: 13.3 µg/m³2025-12-07: 14.6 µg/m³2025-12-08: 15.8 µg/m³2025-12-09: 14.5 µg/m³2025-12-10: 12.9 µg/m³2025-12-11: 12.4 µg/m³2025-12-12: no data2025-12-13: no data2025-12-14: no data2025-12-15: no data2025-12-16: 11.4 µg/m³2025-12-17: 12.5 µg/m³2025-12-18: 13.3 µg/m³2025-12-19: 13.2 µg/m³2025-12-20: no data2025-12-21: no data2025-12-22: 11.9 µg/m³2025-12-23: 12.6 µg/m³2025-12-24: 12.4 µg/m³2025-12-25: 12.2 µg/m³2025-12-26: 14.7 µg/m³2025-12-27: 12.5 µg/m³2025-12-28: no data2025-12-29: 13.9 µg/m³2025-12-30: 13.3 µg/m³2025-12-31: 15.4 µg/m³2026-01-01: 17.1 µg/m³2026-01-02: 15.3 µg/m³2026-01-03: 15.2 µg/m³2026-01-04: no data2026-01-05: 13.8 µg/m³2026-01-06: 12.3 µg/m³2026-01-07: 13.2 µg/m³2026-01-08: 15.8 µg/m³2026-01-09: 16.6 µg/m³2026-01-10: 15.5 µg/m³2026-01-11: 12.4 µg/m³2026-01-12: no data2026-01-13: no data2026-01-14: 15.5 µg/m³2026-01-15: 14.3 µg/m³2026-01-16: 12.3 µg/m³2026-01-17: 13.6 µg/m³2026-01-18: 16.5 µg/m³2026-01-19: 28.8 µg/m³2026-01-20: 42.9 µg/m³2026-01-21: 46.9 µg/m³2026-01-22: 32.9 µg/m³2026-01-23: 22.0 µg/m³2026-01-24: no data2026-01-25: 15.0 µg/m³2026-01-26: 13.5 µg/m³2026-01-27: no data2026-01-28: 13.6 µg/m³2026-01-29: 15.8 µg/m³2026-01-30: 13.9 µg/m³2026-01-31: 15.5 µg/m³2026-02-01: no data2026-02-02: 13.6 µg/m³2026-02-03: 11.6 µg/m³2026-02-04: 11.9 µg/m³2026-02-05: no data2026-02-06: no data2026-02-07: 12.5 µg/m³2026-02-08: no data2026-02-09: no data2026-02-10: 11.1 µg/m³2026-02-11: 11.4 µg/m³2026-02-12: no data2026-02-13: 11.9 µg/m³2026-02-14: 12.5 µg/m³2026-02-15: 11.7 µg/m³2026-02-16: no data2026-02-17: 12.4 µg/m³2026-02-18: 11.6 µg/m³2026-02-19: 11.7 µg/m³2026-02-20: 14.3 µg/m³2026-02-21: 13.3 µg/m³2026-02-22: 14.5 µg/m³2026-02-23: 12.5 µg/m³2026-02-24: 12.7 µg/m³2026-02-25: 13.3 µg/m³2026-02-26: 11.9 µg/m³2026-02-27: 11.8 µg/m³2026-02-28: 11.3 µg/m³2026-03-01: no data2026-03-02: no data2026-03-03: no data2026-03-04: no data2026-03-05: no data2026-03-06: 12.5 µg/m³2026-03-07: 12.4 µg/m³2026-03-08: 12.1 µg/m³2026-03-09: 11.5 µg/m³2026-03-10: 11.7 µg/m³2026-03-11: 14.1 µg/m³2026-03-12: 15.4 µg/m³2026-03-13: 13.5 µg/m³2026-03-14: 13.6 µg/m³2026-03-15: 12.7 µg/m³2026-03-16: 11.3 µg/m³2026-03-17: no data2026-03-18: 11.7 µg/m³2026-03-19: no data2026-03-20: no data2026-03-21: no data2026-03-22: no data2026-03-23: 14.0 µg/m³2026-03-24: 11.8 µg/m³2026-03-25: 12.1 µg/m³2026-03-26: 19.8 µg/m³2026-03-27: 40.7 µg/m³2026-03-28: 37.9 µg/m³2026-03-29: no data2026-03-30: no data2026-03-31: 15.8 µg/m³2026-04-01: 14.7 µg/m³2026-04-02: 22.5 µg/m³2026-04-03: 22.9 µg/m³2026-04-04: 15.6 µg/m³2026-04-05: 21.5 µg/m³2026-04-06: 16.2 µg/m³2026-04-07: 29.3 µg/m³2026-04-08: 31.8 µg/m³2026-04-09: 61.9 µg/m³2026-04-10: 54.6 µg/m³2026-04-11: 29.7 µg/m³2026-04-12: 20.9 µg/m³2026-04-13: 21.5 µg/m³2026-04-14: 33.6 µg/m³2026-04-15: 38.1 µg/m³2026-04-16: 47.4 µg/m³2026-04-17: 47.1 µg/m³2026-04-18: 12.8 µg/m³2026-04-19: 15.7 µg/m³2026-04-20: 25.1 µg/m³2026-04-21: 23.8 µg/m³2026-04-22: 29.5 µg/m³2026-04-23: 14.3 µg/m³2026-04-24: 12.8 µg/m³2026-04-25: no data2026-04-26: 35.6 µg/m³2026-04-27: 28.7 µg/m³2026-04-28: 60.4 µg/m³2026-04-29: 32.5 µg/m³2026-04-30: 33.0 µg/m³2026-05-01: 46.3 µg/m³2026-05-02: 32.0 µg/m³2026-05-03: 68.0 µg/m³2026-05-04: 59.3 µg/m³2026-05-05: 64.0 µg/m³2026-05-06: 31.3 µg/m³2026-05-07: 25.5 µg/m³2026-05-08: 30.0 µg/m³2026-05-09: 25.8 µg/m³2026-05-10: 40.7 µg/m³2026-05-11: 97.3 µg/m³2026-05-12: 69.9 µg/m³2026-05-13: 56.2 µg/m³2026-05-14: 97.1 µg/m³2026-05-15: 87.3 µg/m³2026-05-16: 61.8 µg/m³2026-05-17: 119.0 µg/m³2026-05-18: 156.0 µg/m³2026-05-19: 169.0 µg/m³2026-05-20: 174.0 µg/m³2026-05-21: 78.5 µg/m³2026-05-22: 50.6 µg/m³2026-05-23: 71.0 µg/m³2026-05-24: 77.7 µg/m³2026-05-25: 124.0 µg/m³2026-05-26: 165.0 µg/m³2026-05-27: 110.0 µg/m³2026-05-28: 51.3 µg/m³2026-05-29: 71.8 µg/m³2026-05-30: 94.0 µg/m³2026-05-31: 54.4 µg/m³2026-06-01: 57.3 µg/m³2026-06-02: 85.1 µg/m³2026-06-03: 66.8 µg/m³2026-06-04: 42.9 µg/m³2026-06-05: 77.3 µg/m³2026-06-06: 49.7 µg/m³2026-06-07: 56.7 µg/m³2026-06-08: 34.8 µg/m³2026-06-09: 39.9 µg/m³2026-06-10: 39.0 µg/m³2026-06-11: 58.8 µg/m³2026-06-12: 46.7 µg/m³2026-06-13: 45.7 µg/m³2026-06-14: 35.8 µg/m³2026-06-15: 40.0 µg/m³2026-06-16: 52.4 µg/m³2026-06-17: 63.3 µg/m³2026-06-18: 62.5 µg/m³2026-06-19: 74.9 µg/m³2026-06-20: 46.4 µg/m³2026-06-21: 39.1 µg/m³2026-06-22: 43.0 µg/m³2026-06-23: 44.7 µg/m³2026-06-24: 79.3 µg/m³2026-06-25: 135.0 µg/m³2026-06-26: 73.7 µg/m³2026-06-27: 33.8 µg/m³2026-06-28: 41.9 µg/m³2026-06-29: 40.1 µg/m³2026-06-30: 74.0 µg/m³2026-07-01: 58.2 µg/m³2026-07-02: 116.0 µg/m³2026-07-03: 170.0 µg/m³2026-07-04: 120.0 µg/m³2026-07-05: 128.0 µg/m³2026-07-06: 127.0 µg/m³2026-07-07: 162.0 µg/m³2026-07-08: 143.0 µg/m³2026-07-09: 57.1 µg/m³2026-07-10: 38.3 µg/m³2026-07-11: 39.8 µg/m³2026-07-12: 61.7 µg/m³2026-07-13: 49.2 µg/m³2026-07-14: 71.3 µg/m³2026-07-15: 53.3 µg/m³2026-07-16: no data2026-07-17: 13.6 µg/m³2026-07-18: 12.8 µg/m³2026-07-19: 25.7 µg/m³2026-07-20: 44.4 µg/m³2026-07-21: 21.3 µg/m³2026-07-22: 13.5 µg/m³2026-07-23: 16.7 µg/m³2026-07-24: 27.0 µg/m³2026-07-25: 37.1 µg/m³2026-07-26: 19.6 µg/m³2026-07-27: 16.1 µg/m³2026-07-28: 16.5 µg/m³2026-07-29: 33.0 µg/m³2026-07-30: 43.4 µg/m³2026-07-31: 16.0 µg/m³2026-08-01: 16.1 µg/m³2026-08-02: 19.9 µg/m³2026-08-03: 39.0 µg/m³2026-08-04: 21.4 µg/m³2026-08-05: 38.1 µg/m³2026-08-06: 23.3 µg/m³2026-08-07: 38.3 µg/m³2026-08-08: 27.7 µg/m³2026-08-09: 29.8 µg/m³2026-08-10: 53.3 µg/m³2026-08-11: 49.8 µg/m³2026-08-12: 40.5 µg/m³2026-08-13: 75.6 µg/m³2026-08-14: 64.0 µg/m³2026-08-15: 18.4 µg/m³2026-08-16: 29.3 µg/m³2026-08-17: 27.7 µg/m³2026-08-18: 87.3 µg/m³2026-08-19: 91.1 µg/m³2026-08-20: 50.8 µg/m³2026-08-21: 53.8 µg/m³2026-08-22: 118.0 µg/m³2026-08-23: 122.0 µg/m³2026-08-24: 95.3 µg/m³2026-08-25: 44.4 µg/m³2026-08-26: 23.3 µg/m³2026-08-27: 32.0 µg/m³2026-08-28: 21.9 µg/m³2026-08-29: 28.3 µg/m³2026-08-30: 38.0 µg/m³2026-08-31: 57.6 µg/m³2026-09-01: 37.5 µg/m³2026-09-02: 23.4 µg/m³2026-09-03: 28.8 µg/m³2026-09-04: 20.7 µg/m³2026-09-05: 24.1 µg/m³2026-09-06: 46.0 µg/m³2026-09-07: 32.5 µg/m³2026-09-08: 33.3 µg/m³2026-09-09: 30.1 µg/m³2026-09-10: 31.6 µg/m³2026-09-11: 24.7 µg/m³2026-09-12: 27.1 µg/m³2026-09-13: 36.7 µg/m³2026-09-14: 36.3 µg/m³2026-09-15: 32.0 µg/m³2026-09-16: 34.0 µg/m³2026-09-17: 25.4 µg/m³2026-09-18: 33.5 µg/m³2026-09-19: 26.2 µg/m³2026-09-20: 16.3 µg/m³2026-09-21: 18.6 µg/m³2026-09-22: 16.6 µg/m³2026-09-23: 25.5 µg/m³2026-09-24: 31.5 µg/m³2026-09-25: 16.0 µg/m³2026-09-26: 18.2 µg/m³2026-09-27: 15.3 µg/m³2026-09-28: 17.0 µg/m³2026-09-29: 19.5 µg/m³2026-09-30: 21.9 µg/m³
204 of 311 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

15322026-10-01 22:00 UTC: 32.0 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#2,835OctNovDecJanFebMarAprMayJunJulAugSep#89
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.

2026 against 2025, month by month

15Jan 2025: 18.2 µg/m³Jan 2026: 18.5 µg/m³JanFeb 2025: 22.6 µg/m³Feb 2026: 12.4 µg/m³FebMar 2025: 20.0 µg/m³Mar 2026: 16.0 µg/m³MarApr 2025: 35.1 µg/m³Apr 2026: 29.4 µg/m³AprMay 2025: 58.9 µg/m³May 2026: 79.3 µg/m³MayJun 2025: 80.9 µg/m³Jun 2026: 56.0 µg/m³JunJul 2025: 81.6 µg/m³Jul 2026: 58.4 µg/m³JulAug 2025: 43.6 µg/m³Aug 2026: 47.6 µg/m³AugSep 2025: 22.4 µg/m³Sep 2026: 26.7 µg/m³SepOct 2025: 14.5 µg/m³OctNov 2025: 13.6 µg/m³NovDec 2025: 13.2 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 19.9 µg/m³19.920252025: 17.4 µg/m³17.4
Mean PM2.5 for 24 Sept to 30 Sept in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
LinaresPermission 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, Linares, Chile, 1 Oct 2025 – 30 Sep 2026, smogrank.com/cl/linares (accessed 2 Oct 2026).

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