evidence: - UK air standards call for average annual NO2 readings to be under 40 micrograms per cubic metre - Dungiven breached this average several times in the 2010s - European Environment Agency reports indicate that around 10% of sites breach this limit – meaning Dungiven isn’t unique but still has some of the worst NO2 readings in Western Europe [...] However, the EEA does publish annual reports on European Air Quality. These do not typically include readings for individual sites but do contain useful information. Note that Dungiven’s annual average NO2 readings were 46 µg/m3 in 2017 and 51 µg/m3 in 2018. [...] Asking whether Dungiven is one of the worst places in Western Europe for nitrogen dioxide pollution obviously requires comparing its NO2 readings to other places in Europe.