Indicator: Hot days

A graph shows the number of hot days in the areal mean for 1951 to 2021. Although the trend varies greatly, the increase is clearly visible. A trend line has also been plotted on the graph which shows a significant rise.

The highest number of hot days averaged across Germany were recorded in 2003, 2015 and 2018.Despite considerable fluctuations between individual years, the overall trend is rising significantly.More hot days are expected during summer months in the coming decades due to climate change. read more


Cadmium in particulate matter

Schornsteine vor blauem Himmel

Cadmium is toxic and cancerogenic. It belongs to the heavy metals and usually occurs bound to other substances. In ambient air arsenic is measured bound to particulate matter. read more


Arsenic in particulate matter

A smoking chimney

Arsenic is toxic and can have metallic or non-metallic characteristics. It rarely occurs elementary but most of the time bound to other substances. In ambient air arsenic is measured bound to particulate matter. read more


Heavy Metals in Particulate Matter (PM10)

Heavy metals in ambient air rarely occur elementary but most of the time bound to particulate matter. By inhalation health risks arise because some pollutants like arsenic, cadmium and nickel are classified to be cancerogenic.The European directive 2004/107/EC regulates the measurement and assessment of arsenic, cadmium and nickel in particulate matter (PM10). Lead in particulate matter... read more



Zapfsäule einer Tankstelle mit drei Benzinzapfhähnen

Benzene is an organic, chemical compound with an aromatic odour. It is carcinogenic and a content of petrol. read more


Air pollutants at a glance

Smog in an urban area - Trier

The composition of the air is affected by humans. Many components of the air are, above a certain concentration, a threat to humans and animals and affect plants, water bodies, soils and even buildings and materials. read more


National Integrated Assessment Modelling (NIAM)

NIAM is a network affiliated to the UNECE Air Convention that aims at bringing together integrated assessment modellers from different countries investigating strategies to reduce air pollution and its impacts. We want to share experience on technical aspects of modelling, on the tools and data we use and exchange information about the analysis of national measures and policies. Moreover, NIAM aim... read more

The Umweltbundesamt

For our environment