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North Down Holywood A2

North Down Holywood A2 was last updated 24/09/2017 07:00

Pollutant Band Concentration Period
PM10 particulate matter (Hourly measured) LOW (2) 18 µgm-3 (VCM) 24 Hour mean
Nitrogen dioxide (NO2) LOW (1) 3 µgm-3 hourly mean
Nitric oxide (NO) Not applicable 4 µgm-3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOXasNO2) Not applicable 9 µgm-3 hourly mean