A new report from the World Meteorological Organization (WMO) highlights the growing connection between climate change and air quality, warning that rising pollution from wildfires and heatwaves could hinder global efforts to improve air quality and protect human and environmental health. The report emphasizes the need for better monitoring of air pollutants such as fine particulate matter (PM2.5), ground-level ozone, and aerosols like black carbon and microplastics. These pollutants are widespread and can have harmful effects on ecosystems and human health, yet they are not currently monitored in sufficient detail. The report also calls for coordinated policies that address both air quality and climate change, as the two are deeply interconnected. Particulate matter, specifically PM2.5—tiny particles less than 2.5 micrometers in diameter—can penetrate deep into the lungs and bloodstream, causing serious health issues. It is emitted by sources such as industrial activity, transportation, wildfires, and dust storms. In 2025, PM2.5 levels were higher than average in regions like northern Canada, parts of Russia, and west-central Africa, largely due to increased wildfires. In contrast, China saw a decline in PM2.5 levels, reflecting reduced emissions from human activities. India, however, continued to face above-average levels due to biomass burning and other pollution sources. The WMO report used data from multiple models, and despite some variations, the findings were largely consistent, indicating a solid understanding of atmospheric processes. Extreme wildfires are becoming more frequent, leading to significant health risks due to the highly toxic nature of smoke. While regulations in Europe and North America have helped reduce industrial and transportation-related PM2.5 emissions, exposure to fire-related pollution has increased. A study cited in the report found that extreme fire-smoke events have more than tripled globally since the 1990s, potentially contributing to nearly 100,000 additional deaths annually between 2010 and 2018. However, this number may be an underestimate. Current air quality risk models often fail to account for the heightened toxicity of wildfire smoke, which could lead to underestimating the health risks. One study found that traditional models might underestimate deaths linked to wildfire smoke by as much as 93%, underscoring the need for more accurate assessments. Ground-level ozone, a harmful pollutant, is also on the rise, especially during heat waves. This pollutant affects human health, agriculture, and ecosystems, and long-term exposure is linked to increased mortality from respiratory diseases. Rising temperatures, stagnant air, and strong sunlight contribute to the formation of ground-level ozone, as seen in recent heatwaves across the southeastern U.S., Europe, and China. The report warns that the health risks associated with ozone pollution are likely to grow in the coming years. Meanwhile, aerosols such as black carbon and microplastics can travel long distances, affecting environments far from their sources. These particles can alter how sunlight is reflected, impact ecosystems, and pollute remote areas. Monitoring these pollutants is essential to understanding their broader environmental impacts.