DCMR Environmental Protection Agency

Current value: 52 µg/m3
Highest hourly value: 69 µg/m3

Concentrations of nitrogen dioxide (NO2) are affected by traffic density, season and the weather. The statutory standard is 40 micrograms per cubic metre of air, averaged over a calendar year. If concentrations are (much) higher then normal for a specific time and date, then the airquality is presented as (very) poor. The law contains a so-called alert threshold: concentrations which for three hours remain higher than 400 micrograms. This has never yet happened but if it did the public would be informed well before it got to this point.

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The latest available hourly values are from 21.05.2012 21:00 hour.

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