# WMO bulletin tracks 2025 particulate increases linked to wildfires

> WMO says wildfire activity pushed PM2.5 above long-term averages in northern Canada, parts of Russia and west-central Africa in 2025.

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- Publisher: Newsverum
- Section: Climate
- Published: 2026-10-06T08:59:02+00:00
- Updated: 2026-10-07T05:59:34+03:00
- Event / data period: 2025
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In its Air Quality and Climate Bulletin released on 7 September, WMO said wildfire activity in 2025 pushed PM2.5 concentrations above long-term averages in northern Canada, parts of the Russian Federation and west-central Africa. Exceptional late-summer fires also created a hotspot in north-western Spain.

The bulletin said burning in Amazonia was lower than in previous years, PM2.5 remained below average in China as human-caused emissions declined, and levels were above average in India due to biomass burning and other pollution. WMO called for air-quality and climate policies to be addressed together.

## Data

### Source-reported figure

Measurement or forecast published by the official source.

Methodology: Stores the source-reported value and period without conversion or an independent forecast.

| label | value | unit | period | basis |
|---|---|---|---|---|
| Year of PM2.5 concentrations described by WMO | 2025 | year | 2025 | observed |

Sources: <https://public.wmo.int/media/news/wmo-bulletin-shows-air-quality-and-climate-interlinkages> · Download data: [JSON](https://newsverum.com/api/v1/articles/wmo-air-quality-climate-bulletin-wildfire-pm25-trends/data/reported-figure?lang=en&format=json) · [CSV](https://newsverum.com/api/v1/articles/wmo-air-quality-climate-bulletin-wildfire-pm25-trends/data/reported-figure?lang=en&format=csv)

## Sources

- [World Meteorological Organization](<https://public.wmo.int/media/news/wmo-bulletin-shows-air-quality-and-climate-interlinkages>) (Source checked: 2026-10-06; Published: 2026-09-07)

## Correction history

- 2026-10-07T00:52:56+03:00: German and Portuguese editions and translations of the data and correction explanations have been added to this article.
- 2026-10-07T05:59:34+03:00: Data classification added: each figure now carries a measure identifier with its unit, geography, frequency and type. No figure, unit or date changed.

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