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.
Event / data period: 2025
Published: · Updated:
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.
- Year of PM2.5 concentrations described by WMO
- 2,025 year
- 2025 · Observed
Methodology
Stores the source-reported value and period without conversion or an independent forecast.
Updated:
Subjects and places
Subject proposals
- EnvironmentSuggested
- Preserved editorial category/topic; broad candidate onlypublic.wmo.int ↗