Department of Agriculture, environment and rural affairs
Data Site Data

North Down Holywood A2

Last Updated: 04/02/2026 02:00
North Down Holywood A2 latest recorded data table
Pollutant Band Concentration Period Last updated
Nitric oxide (NO) Not applicable 1 µgm-3 hourly mean 04/02/2026 02:00
Nitrogen dioxide (NO2) LOW (1) 4 µgm-3 hourly mean 04/02/2026 02:00
Nitrogen oxides as nitrogen dioxide (NOXasNO2) Not applicable 5 µgm-3 hourly mean 04/02/2026 02:00
PM10 particulate matter (Hourly measured) LOW (1) 15 µgm-3 (FIDAS) 24 Hour mean 04/02/2026 02:00
PM2.5 particulate matter (Hourly measured) LOW (1) 11 µgm-3 (Ref.eq) 24 Hour mean 04/02/2026 02:00
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Parameter Parameter Name
NO Nitric oxide
NO2 Nitrogen dioxide
NOXasNO2 Nitrogen oxides as nitrogen dioxide
PM10 PM10 Particulate Matter
PM2.5 PM2.5 Particulate Matter
M_DIR Modelled Wind Direction
M_SPED Modelled Wind Speed
M_T Modelled Temperature
DIR Wind Direction
SPED Wind Speed
T Ambient Temperature
TMP Enclosure Temperature

General Information

Altitude
4m
Coordinates (Lat/Long)
54.641998, -5.837910
Environment Type
Roadside: A site sampling between 1m of the kerbside of a busy road and the back of the pavement. Typically this will be within 5m of the road, but could be up to 15m.
Kerb Distance
4.2m
Height
2.7 Metres
Site Comments
On Marine Parade, A2 through Holywood.

Active Dates

Parameter Date Started Date Ended
Nitric oxide 01/03/2003 -
Nitrogen dioxide 01/03/2003 -
Nitrogen oxides as nitrogen dioxide 01/03/2003 -
PM10 particulate matter (Hourly measured) 01/03/2003 -
PM2.5 particulate matter (Hourly measured) 16/11/2020 -
Modelled Wind Direction 01/08/2010 -
Modelled Wind Speed 01/08/2010 -
Modelled Temperature 01/08/2010 -
Wind Direction 01/03/2003 -
Wind Speed 01/03/2003 -
Ambient Temperature 01/03/2003 -
Enclosure Temperature 01/03/2003 08/03/2006
North Down Holywood A2 site: Site view
Site
North Down Holywood A2 site: North view
North
North Down Holywood A2 site: East view
East
North Down Holywood A2 site: South view
South
North Down Holywood A2 site: West view
West