SmogRank / Chile / Biobio

Air quality in Lota

No new readings from Lota's monitors since 1 Oct. Some networks publish days late. The figures below are from before then; they update when the data returns.

Biobio, Chile. PM2.5 from 1 reference monitor. None of them reported in the last 24 hours.

17.2µg/m³
Moderate

Mean for 1 Oct, the most recent day with readings, 1.1× the WHO 24-hour guideline.

Rank, worst first

24 hours–not enough data
7 days#219of 2,603, at 18.6 µg/m³, 7 days to 1 Oct
30 days#368of 2,623, at 20.7 µg/m³, 27 days to 1 Oct
This year#451of 2,447, at 21.7 µg/m³, to 1 Oct

Why it ranks here

Seasonal. Over the past year its worst months were May, June, averaging up to 32.9 µg/m³ against 13.2 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Lota'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: no data2025-11-05: no data2025-11-06: 11.8 µg/m³2025-11-07: 14.5 µg/m³2025-11-08: 13.9 µg/m³2025-11-09: 15.1 µg/m³2025-11-10: 14.8 µg/m³2025-11-11: 13.3 µg/m³2025-11-12: no data2025-11-13: no data2025-11-14: 12.8 µg/m³2025-11-15: 12.5 µg/m³2025-11-16: no data2025-11-17: no data2025-11-18: no data2025-11-19: 13.8 µg/m³2025-11-20: 12.5 µg/m³2025-11-21: 12.0 µg/m³2025-11-22: 16.9 µg/m³2025-11-23: 17.2 µg/m³2025-11-24: 20.3 µg/m³2025-11-25: 16.7 µg/m³2025-11-26: no data2025-11-27: 12.1 µg/m³2025-11-28: no data2025-11-29: 11.8 µg/m³2025-11-30: no data2025-12-01: 12.6 µg/m³2025-12-02: 12.5 µg/m³2025-12-03: 11.0 µg/m³2025-12-04: no data2025-12-05: 11.3 µg/m³2025-12-06: 14.0 µg/m³2025-12-07: 18.9 µg/m³2025-12-08: 17.7 µg/m³2025-12-09: 16.5 µg/m³2025-12-10: 14.9 µg/m³2025-12-11: 11.3 µg/m³2025-12-12: no data2025-12-13: no data2025-12-14: no data2025-12-15: no data2025-12-16: 12.4 µg/m³2025-12-17: 13.8 µg/m³2025-12-18: 12.1 µg/m³2025-12-19: no data2025-12-20: no data2025-12-21: 11.2 µg/m³2025-12-22: no data2025-12-23: 12.5 µg/m³2025-12-24: no data2025-12-25: no data2025-12-26: no data2025-12-27: no data2025-12-28: no data2025-12-29: no data2025-12-30: 11.9 µg/m³2025-12-31: no data2026-01-01: no data2026-01-02: no data2026-01-03: no data2026-01-04: no data2026-01-05: 12.2 µg/m³2026-01-06: no data2026-01-07: 13.3 µg/m³2026-01-08: 16.7 µg/m³2026-01-09: 15.7 µg/m³2026-01-10: 11.1 µg/m³2026-01-11: 11.0 µg/m³2026-01-12: 12.5 µg/m³2026-01-13: 14.6 µg/m³2026-01-14: no data2026-01-15: no data2026-01-16: 13.8 µg/m³2026-01-17: 13.4 µg/m³2026-01-18: 11.3 µg/m³2026-01-19: 12.3 µg/m³2026-01-20: 13.2 µg/m³2026-01-21: 13.6 µg/m³2026-01-22: 11.6 µg/m³2026-01-23: 13.2 µg/m³2026-01-24: 16.5 µg/m³2026-01-25: 13.5 µg/m³2026-01-26: no data2026-01-27: no data2026-01-28: 12.2 µg/m³2026-01-29: 12.3 µg/m³2026-01-30: no data2026-01-31: 13.6 µg/m³2026-02-01: 14.8 µg/m³2026-02-02: 15.3 µg/m³2026-02-03: no data2026-02-04: 12.7 µg/m³2026-02-05: 13.0 µg/m³2026-02-06: 11.8 µg/m³2026-02-07: 16.6 µg/m³2026-02-08: 14.6 µg/m³2026-02-09: 13.6 µg/m³2026-02-10: 13.9 µg/m³2026-02-11: 13.5 µg/m³2026-02-12: no data2026-02-13: 14.2 µg/m³2026-02-14: 13.4 µg/m³2026-02-15: no data2026-02-16: 12.9 µg/m³2026-02-17: 12.5 µg/m³2026-02-18: 14.5 µg/m³2026-02-19: 14.5 µg/m³2026-02-20: 18.0 µg/m³2026-02-21: 19.3 µg/m³2026-02-22: 17.6 µg/m³2026-02-23: 14.6 µg/m³2026-02-24: no data2026-02-25: 16.3 µg/m³2026-02-26: 15.2 µg/m³2026-02-27: no data2026-02-28: no data2026-03-01: no data2026-03-02: 13.6 µg/m³2026-03-03: 13.6 µg/m³2026-03-04: 13.5 µg/m³2026-03-05: 15.6 µg/m³2026-03-06: 19.4 µg/m³2026-03-07: 19.8 µg/m³2026-03-08: 14.7 µg/m³2026-03-09: 14.4 µg/m³2026-03-10: 17.6 µg/m³2026-03-11: 22.9 µg/m³2026-03-12: 16.5 µg/m³2026-03-13: 14.7 µg/m³2026-03-14: 16.0 µg/m³2026-03-15: no data2026-03-16: no data2026-03-17: 13.3 µg/m³2026-03-18: 13.7 µg/m³2026-03-19: 13.5 µg/m³2026-03-20: 14.1 µg/m³2026-03-21: 14.8 µg/m³2026-03-22: 14.8 µg/m³2026-03-23: 13.8 µg/m³2026-03-24: 14.2 µg/m³2026-03-25: 14.8 µg/m³2026-03-26: 18.6 µg/m³2026-03-27: 20.6 µg/m³2026-03-28: 21.6 µg/m³2026-03-29: 14.8 µg/m³2026-03-30: 18.6 µg/m³2026-03-31: 15.6 µg/m³2026-04-01: 15.5 µg/m³2026-04-02: 17.8 µg/m³2026-04-03: 24.9 µg/m³2026-04-04: 19.5 µg/m³2026-04-05: 16.6 µg/m³2026-04-06: 19.7 µg/m³2026-04-07: 19.4 µg/m³2026-04-08: 20.9 µg/m³2026-04-09: 31.5 µg/m³2026-04-10: 32.3 µg/m³2026-04-11: 30.3 µg/m³2026-04-12: 30.3 µg/m³2026-04-13: 30.7 µg/m³2026-04-14: 22.7 µg/m³2026-04-15: 21.5 µg/m³2026-04-16: 23.2 µg/m³2026-04-17: 17.8 µg/m³2026-04-18: 17.4 µg/m³2026-04-19: 19.3 µg/m³2026-04-20: 25.0 µg/m³2026-04-21: 28.9 µg/m³2026-04-22: 22.8 µg/m³2026-04-23: 34.9 µg/m³2026-04-24: 28.8 µg/m³2026-04-25: 20.5 µg/m³2026-04-26: 24.5 µg/m³2026-04-27: 27.3 µg/m³2026-04-28: 23.5 µg/m³2026-04-29: 19.3 µg/m³2026-04-30: 29.1 µg/m³2026-05-01: 26.4 µg/m³2026-05-02: 20.7 µg/m³2026-05-03: 33.7 µg/m³2026-05-04: 23.1 µg/m³2026-05-05: 24.5 µg/m³2026-05-06: 16.7 µg/m³2026-05-07: 19.7 µg/m³2026-05-08: no data2026-05-09: no data2026-05-10: no data2026-05-11: no data2026-05-12: no data2026-05-13: 38.4 µg/m³2026-05-14: 45.3 µg/m³2026-05-15: 37.5 µg/m³2026-05-16: 31.4 µg/m³2026-05-17: 36.0 µg/m³2026-05-18: 39.3 µg/m³2026-05-19: 42.8 µg/m³2026-05-20: 58.5 µg/m³2026-05-21: no data2026-05-22: no data2026-05-23: no data2026-05-24: no data2026-05-25: 29.5 µg/m³2026-05-26: no data2026-05-27: 33.7 µg/m³2026-05-28: 21.3 µg/m³2026-05-29: 31.2 µg/m³2026-05-30: 39.3 µg/m³2026-05-31: 42.8 µg/m³2026-06-01: 30.0 µg/m³2026-06-02: 24.4 µg/m³2026-06-03: 25.5 µg/m³2026-06-04: 35.5 µg/m³2026-06-05: 39.4 µg/m³2026-06-06: 36.4 µg/m³2026-06-07: 39.2 µg/m³2026-06-08: no data2026-06-09: no data2026-06-10: 20.4 µg/m³2026-06-11: 26.2 µg/m³2026-06-12: 29.3 µg/m³2026-06-13: 21.7 µg/m³2026-06-14: 33.3 µg/m³2026-06-15: 32.3 µg/m³2026-06-16: 36.0 µg/m³2026-06-17: 43.1 µg/m³2026-06-18: 37.7 µg/m³2026-06-19: 38.5 µg/m³2026-06-20: 26.0 µg/m³2026-06-21: 19.8 µg/m³2026-06-22: 18.1 µg/m³2026-06-23: 24.3 µg/m³2026-06-24: 30.3 µg/m³2026-06-25: 18.8 µg/m³2026-06-26: 17.5 µg/m³2026-06-27: 15.5 µg/m³2026-06-28: 17.1 µg/m³2026-06-29: 21.7 µg/m³2026-06-30: 21.0 µg/m³2026-07-01: 19.3 µg/m³2026-07-02: 19.4 µg/m³2026-07-03: 15.7 µg/m³2026-07-04: 21.8 µg/m³2026-07-05: no data2026-07-06: no data2026-07-07: no data2026-07-08: no data2026-07-09: no data2026-07-10: 17.3 µg/m³2026-07-11: 23.9 µg/m³2026-07-12: 24.8 µg/m³2026-07-13: 14.5 µg/m³2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: 24.2 µg/m³2026-07-21: no data2026-07-22: no data2026-07-23: no data2026-07-24: 21.3 µg/m³2026-07-25: no data2026-07-26: no data2026-07-27: 18.1 µg/m³2026-07-28: 19.0 µg/m³2026-07-29: 21.3 µg/m³2026-07-30: 18.4 µg/m³2026-07-31: 18.5 µg/m³2026-08-01: 22.2 µg/m³2026-08-02: 22.3 µg/m³2026-08-03: 22.8 µg/m³2026-08-04: 24.6 µg/m³2026-08-05: 29.5 µg/m³2026-08-06: 18.9 µg/m³2026-08-07: 18.0 µg/m³2026-08-08: 17.3 µg/m³2026-08-09: 14.5 µg/m³2026-08-10: 17.1 µg/m³2026-08-11: 24.0 µg/m³2026-08-12: 18.9 µg/m³2026-08-13: 21.3 µg/m³2026-08-14: 26.8 µg/m³2026-08-15: 17.6 µg/m³2026-08-16: 17.0 µg/m³2026-08-17: 19.5 µg/m³2026-08-18: 30.0 µg/m³2026-08-19: 29.2 µg/m³2026-08-20: 31.8 µg/m³2026-08-21: 29.5 µg/m³2026-08-22: 40.3 µg/m³2026-08-23: 44.8 µg/m³2026-08-24: 41.6 µg/m³2026-08-25: 27.7 µg/m³2026-08-26: 19.8 µg/m³2026-08-27: 23.5 µg/m³2026-08-28: 19.0 µg/m³2026-08-29: 20.1 µg/m³2026-08-30: 23.8 µg/m³2026-08-31: 21.3 µg/m³2026-09-01: 23.0 µg/m³2026-09-02: 21.1 µg/m³2026-09-03: 17.8 µg/m³2026-09-04: no data2026-09-05: no data2026-09-06: no data2026-09-07: 18.1 µg/m³2026-09-08: 25.6 µg/m³2026-09-09: 24.3 µg/m³2026-09-10: 25.0 µg/m³2026-09-11: 20.7 µg/m³2026-09-12: 16.5 µg/m³2026-09-13: 15.6 µg/m³2026-09-14: 26.4 µg/m³2026-09-15: 29.7 µg/m³2026-09-16: 26.9 µg/m³2026-09-17: 21.0 µg/m³2026-09-18: 24.2 µg/m³2026-09-19: 23.2 µg/m³2026-09-20: 17.9 µg/m³2026-09-21: 15.9 µg/m³2026-09-22: 21.0 µg/m³2026-09-23: 20.5 µg/m³2026-09-24: 17.9 µg/m³2026-09-25: 20.4 µg/m³2026-09-26: 18.7 µg/m³2026-09-27: 21.5 µg/m³2026-09-28: 21.7 µg/m³2026-09-29: 14.6 µg/m³2026-09-30: 15.9 µg/m³2026-10-01: 17.2 µg/m³
182 of 269 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Where it stood each day

Top 10Top 100#1#10#100#1,000#2,835NovDecJanFebMarAprMayJunJulAugSep#248
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: 14.4 µg/m³Jan 2026: 13.2 µg/m³JanFeb 2025: 14.6 µg/m³Feb 2026: 14.7 µg/m³FebMar 2025: 16.1 µg/m³Mar 2026: 16.0 µg/m³MarApr 2025: 17.2 µg/m³Apr 2026: 23.9 µg/m³AprMay 2025: 18.7 µg/m³May 2026: 32.9 µg/m³MayJun 2025: 17.6 µg/m³Jun 2026: 27.8 µg/m³JunJul 2025: 17.8 µg/m³Jul 2026: 19.8 µg/m³JulAug 2025: 17.8 µg/m³Aug 2026: 24.3 µg/m³AugSep 2025: 15.2 µg/m³Sep 2026: 20.9 µg/m³SepOct 2025: 13.6 µg/m³OctNov 2025: 14.2 µg/m³NovDec 2025: 13.4 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 18.6 µg/m³18.620252025: 13.1 µg/m³13.1
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Lota ruralPermission 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, Lota, Chile, 2 Oct 2025 – 1 Oct 2026, smogrank.com/cl/lota (accessed 2 Oct 2026).

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Other cities in Chile

30-day averages, µg/m³. All of Chile.

Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.