# Air pollution management in Biobío Region

> Live situation record from CLSTR: https://clstr.news/situations/air-pollution-management-in-biobo-region
> Updated: 2026-10-17T11:47:12.000Z. Sources: 3. Developments: 2.

The 2026 Critical Episode Management season in Chile’s Biobío Region concluded on September 30 with a reported reduction in air pollution incidents. Under Atmospheric Decontamination Plans, Los Ángeles recorded 9 alerts, 11 pre-emergencies, and 6 environmental emergencies, a decrease from the 10 environmental emergencies reported in 2025.

In the Concepción Metropolitan area, the season saw 10 alerts and 2 pre-emergencies, with no environmental emergencies reported. Authorities attributed these improvements to coordinated agency efforts and shifts in citizen heating habits.

## Timeline

### 2026-10-17: Biobío Region sees zero environmental assessment backlog

Chile's Ministry of Public Works has eliminated environmental assessment delays in the Biobío Region, potentially unlocking US$ 1 billion in infrastructure investment and creating 2,500 jobs.

2 sources. https://clstr.news/cluster/biobo-region-sees-zero-environmental-assessment-backlog

### 2026-09-30: Biobío Region reports decrease in air pollution episodes for 2026

The 2026 air quality season in Chile's Biobío Region saw a historic decrease in critical pollution episodes, particularly in Los Ángeles, following atmospheric decontamination efforts.

2 sources. https://clstr.news/cluster/biobo-region-reports-decrease-in-air-pollution-episodes-for-2026

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Cite as: Air pollution management in Biobío Region. CLSTR, https://clstr.news/situations/air-pollution-management-in-biobo-region