The European Parliament and Council are currently discussing the Commission’s proposal for the revision of the 2003 National Emission Ceiling (NEC) Directive. This directive can steer national policies to reduce air pollution in the EU. European cities are fully committed to improving air quality. However, many factors affecting air pollution are beyond our control, and many city authorities are struggling to meet the local air quality requirements of the Ambient Air Quality Directive (2008/50/EC). POLIS and EUROCITIES fully support the revision of the NEC directive, as itis essential for improving local air quality within the limit values of the Ambient Air Quality (AAQ) Directive (2008/50/EC).