nitrogen dioxide


Indicator: Air quality in agglomerations

A graph shows how strongly, on average, urban background levels of three main air pollutants in German agglomerations exceeded World Health Organisation (WHO) recommendations between 2000 and 2019. The trend for the different pollutants varies. Between 2000 and 2019, the values for nitrogen dioxide were between 35.9 and -7.7 percent, for ozone between 71.0 and 73,5 percent and for particulate matter (PM2.5) between 77.3 and 4.1 percent.

The background levels of two main air pollutants (PM2.5, ozone) in German agglomerations exceed World Health Organisation (WHO) guide line values.Close to sources, pollutant levels can even be significantly higher.The situation regarding nitrogen dioxide and particulate matter has greatly improved since 2000.Ozone and particulate matter pollution is very dependent on the weather. Levels thus fluct... read more


Quick guide on how to use "Current air data" information pages

Experts at the monitoring stations of the German states and the German Environment Agency take multiple daily measurements to determine the air quality in Germany. Shortly after measurements are taken, you can go to our “Current air data” webpage to look up measured values, some forecast data, and data on past years. read more


Nitrogen dioxide

The main sources of the air pollutant nitrogen dioxide are combustion processes in the industrial and energy production sectors, and road transport. Nitrogen dioxide affects the respiratory mucous membrane and influences the respiratory function. read more


The Umweltbundesamt

For our environment