SmogRank / Chile / Maule Region / Linares
Linares, month by month
Linares has a measured daily mean on 816 days since 1 January 2023. Its worst month was July 2025, at 169 US AQI (81.6 µg/m³), 4th of 2,889 cities on that month's world ranking. Its cleanest was February 2026, at 57 US AQI (12.4 µg/m³).
Every month since 2023
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
Months without a mean, and why
18 months
| Month | Why |
|---|---|
| Mar 2026 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Feb 2024 | No day measured. The others: 1 missing from OpenAQ's archive, 28 with under 18 hours of readings or readings that failed our checks. |
| Jan 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Dec 2023 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2023 | 3 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Sep 2023 | 3 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Linares's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2025 | 16981.6 µg/m³ | 4thof 2,889 | Southern Chile, 29 June to 4 July 2025 |
| June 2025 | 16980.9 µg/m³ | 4thof 2,508 | Southern Chile, 29 June to 4 July 2025 South-western Chile, June 2025and 1 more |
| May 2026 | 16879.3 µg/m³ | 6thof 2,874 | Chile, May 2026 Southern Chile, May 2026 |
| June 2023 | 15460.1 µg/m³ | 9thof 1,603 | South-western Chile, June 2023 Southern Chile, June 2023 |
| July 2023 | 15459.1 µg/m³ | 6thof 1,432 | Southern Chile, July 2023 |
| May 2025 | 15358.9 µg/m³ | 18thof 2,826 | – |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Linares's worst days
| Day | US AQI | Episode |
|---|---|---|
| 3 Jul 2025 | 289214.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 10 Jun 2025 | 263188.0 µg/m³ | South-western Chile, June 2025 |
| 4 Jul 2025 | 255180.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 2 Jul 2025 | 254179.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 20 May 2026 | 249174.0 µg/m³ | Southern Chile, May 2026 |
| 3 Jul 2026 | 245170.0 µg/m³ | Southern Chile, July 2026 |
| 19 May 2026 | 244169.0 µg/m³ | Southern Chile, May 2026 |
| 26 May 2026 | 240165.0 µg/m³ | Chile, May 2026 |
| 7 Jul 2026 | 237162.0 µg/m³ | Southern Chile, July 2026 |
| 18 May 2026 | 231156.0 µg/m³ | Southern Chile, May 2026 |
Daily means, the highest since 1 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Linares, Chile, 1 Jan 2023 – 11 Oct 2026. Monitor data from Chile - SINCA via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/cl/linares/history (accessed 12 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Linares now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).