This bulletin highlights some of the significant atmospheric composition-related events that took place during the boreal spring (March, April and May) of 2025.

The Copernicus Atmosphere Monitoring Service routinely tracks key indicators of the composition of the atmosphere all around the globe, including surface air quality in Europe, smoke emissions from wildfires, and global concentrations of atmospheric pollutants and greenhouse gases, amongst others. During the boreal spring (March-April-May) 2024

The Copernicus Atmosphere Monitoring Service routinely tracks key indicators of the composition of the atmosphere all around the globe, including surface air quality in Europe, smoke emissions from wildfires, and global concentrations of atmospheric pollutants and greenhouse gases, amongst others.

This bulletin highlights some of the significant atmospheric composition-related events that took place during the boreal autumn (September-October-November) of 2024.

CAMS on air

Press

Reactive gases Aerosols

The following Q&As are designed to help explain how CO2 relates to climate change and how the Copernicus Atmosphere Monitoring Service (CAMS), implemented by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, has a vital role to play in monitoring and forecasting greenhouse gas concentrations. What is

The following Q&As are designed to help explain how CH4 relates to climate change and how the Copernicus Atmosphere Monitoring Service (CAMS), implemented by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, has a vital role to play in monitoring and forecasting greenhouse gas concentrations. What is

How does CAMS monitor wildfires? CAMS provides up-to-date information on the location, intensity, and emissions of wildfires, vegetation fires and open burning around the world through its Global Fire Assimilation System (GFAS). This information is based on measurements from instruments on satellites that are able to detect the fire radiative

The following Q&As are designed to help explain how reanalysis is a crucial tool in providing high quality and accurate data relating to our climate and atmosphere.

The following answers to commonly asked questions are designed to help further explain desert dust transport and its impact.

The following Q&As explain how CAMS monitors SO2 emissions resulting from volcanic eruptions.

Q&As

Forecasts of the five main air pollutants regulated by the European Union and the World Health Organization air quality standards: nitrogen dioxide (NO2), ozone (O3), coarse particulate matter (PM10), fine particulate matter (PM2.5) and sulphur dioxide (SO2).

European forecasts for other air quality pollutants: ammonia, carbon monoxide, formaldehyde, glyoxal, nitrogen monoxide, non-methane VOCs, peroxyacyl nitrates.

European forecasts for the main secondary aerosols tracers: dust, PM10 produced by wildfires, residential elementary carbon, secondary carbon, total elementary carbon.

CAMS regional ensemble produces forecasts for the main allergen pollen species: alder, birch, grass, mugwort, olive, ragweed.

Every day CAMS provides four-day forecasts of the EU-WHO regulated pollutants, other air quality pollutants, pollens and aerosol tracers for Europe based on CAMS’ regional ensemble model. The maps are accessible below, and the full range of European forecast charts and maps

At the core of our service is providing access to data and tools related to atmospheric monitoring. We also support our users by providing quality assurance information, and advice on how to use and interpret data.