Wildfires, Heatwaves Threaten Global Air Quality and Health, UN Warns
The WMO said fire-related PM2.5 exposure has risen as extreme smoke events have tripled globally since the 1990s.
- On Monday, the World Meteorological Organization warned that intensifying wildfires and heatwaves threaten global air quality goals, emphasizing that climate change and air pollution are intrinsically linked and require coordinated policy responses.
- Burning vegetation releases toxic fine particulate matter known as PM2.5, while ground-level ozone accumulates when temperatures rise; Lorenzo Labrador, a WMO scientific officer, noted these wildfire-generated microparticles are "much more toxic" than emissions from industrial sources.
- Extreme fire-smoke events have tripled globally since the 1990s, contributing to nearly 100,000 additional deaths annually between 2010 and 2018; the WMO warned that conventional risk models may underestimate wildfire-attributable mortality by up to 93 percent.
- The WMO identified black carbon and microplastics as poorly tracked pollutants, with simulations estimating 51 million tonnes for land and 22 million tonnes for the ocean; black carbon deposits on snow and ice hasten melting by reducing sunlight reflection.
- While regulations in Europe and North America have reduced industrial emissions, exposure to fire-related PM2.5 has increased; the agency stressed that complementary policies are essential because pollutants remain insufficiently monitored despite widespread presence.
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21 Articles
UN warns wildfires, heatwaves threaten air quality and health
Wildfires and heatwaves are posing a growing threat to air quality and public health, with toxic smoke and microscopic pollutants potentially undermining efforts to tackle air pollution and climate change, the World Meteorological Organization (WMO) said
Global Wildfires: A Growing Threat to Air Quality and Health | Science-Environment
Wildfires, intensified by climate change, threaten global air quality and public health. The World Meteorological Organization warns that these fires are becoming major pollution sources, making it challenging to meet international air quality standards. Coordinated global policies are essential to tackle both air pollution and climate change.
The UN's meteorological agency (WMO) warns that climate change is fueling forest fires and heat waves, worsening air pollution and threatening global health.
Wildfires, heatwaves threaten global air quality and health, UN warns
Wildfires and heatwaves are threatening global efforts to improve air quality and protect human health, the World Meteorological Organisation said on Monday. The UN agency warned that increasingly severe fires are raising exposure to toxic PM2.5 pollution, even as regulations have reduced industrial and transport emissions in Europe and North America.
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