With the Act no. 201/2012 Coll, on air quality, the EU Air Quality Directive is transposed in national legislation. Accordingly, the limit value for particulate matter was set at 50 µg/m³, which may be exceeded on a maximum of 35 days a year. The average annual value for nitrogen dioxide was set at 40 µg/m3. The EU directive obliges Member states to draw up plans and programmes for air quality control. So far the Ministry of Environment developed 10 air quality plans in the Czech Republic.
Main sources of pollution in the Czech Republic are transport in cities and heavy industry and energy production in specific regions (especially Moravskoslezký and Ústecký regions), local household heating in smaller towns and transboundary pollution from Poland. Air pollution is one of the key long-lasting environmental problems of the Czech Republic.
In addition the Czech Republic received a formal notice in an infringement procedure from the Commission for exceeding the PM10 limit values. The latest figures from the Czech Republic show that the max. daily limits for these particles are being exceeded in Prague and 9 other areas. The Commission considers that the Czech Republic has failed to take measures that should have been in place to protect citizens' health, and is requesting to take forward-looking, speedy and effective action to keep the period of non-compliance as short as possible.
Apart from the PM10 infringement procedure, the Commission initiated an infringement procedure concerning the NO2 infringement procedure - Czech Republic has already received a letter of formal notice.