Appendix E: Summary of Air Quality Objectives in England Table E.1 Air Quality Objectives in England – Air Quality Objective Pollutant Concentration Measured as 200 µg/m3 not to be exceeded more Nitrogen Dioxide 1-hour mean than 18 times a year (NO2) 40 µg/m3 Annual mean 50 µg/m3, not to be exceeded more Particulate Matter 24-hour mean than 35 times a year (PM10) 40 µg/m3 Annual mean
Appendix E: Summary of Air Quality Objectives in England Table E.1 – Air Quality Objectives in England Pollutant Air Quality Objective Concentration Measured as Nitrogen Dioxide (NO2) 200 µg/m3 not to be exceeded more than 18 times a year 1-hour mean 40 µg/m3 Annual mean Particulate Matter (PM10) 50 µg/m3, not to be exceeded more than 35 times a year 24-hour mean 40 µg/m3 Annual mean
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