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ozone

Health

Special Exposure Situations

Smog during sunrise in Shanghai

Exceptional exposure situations deserve special consideration. They occur when usual or expected environmental conditions are not met. Human health is particularly at risk in these often extreme stressful situations, therefore environmental hygiene and environmental medicine take up a position on such topics. read more

169

Umwelt-Indikator

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 2017. The trend for the different pollutants varies. Between 2000 and 2017, the values for nitrogen dioxide were between 35.9 and 5.5 percent, for ozone between 71.0 and 54.2 percent and for particulate matter (PM2.5) between 77.3 and 20.1 percent.

The background levels of three main air pollutants in German agglomerations exceed World Health Organisation (WHO) guide line values and effect thresholds.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 t... read more

169

The Umweltbundesamt

For our environment