Data
Site Data
North Down Holywood A2
Last Updated: 30/04/2025 04:00
| Pollutant | Band | Concentration | Period | Last updated |
|---|---|---|---|---|
| Nitric oxide (NO) | Not applicable | 11 µgm-3 | hourly mean | 30/04/2025 04:00 |
| Nitrogen dioxide (NO2) | LOW (1) | 38 µgm-3 | hourly mean | 30/04/2025 04:00 |
| Nitrogen oxides as nitrogen dioxide (NOXasNO2) | Not applicable | 55 µgm-3 | hourly mean | 30/04/2025 04:00 |
| PM10 particulate matter (Hourly measured) | LOW (2) | 18 µgm-3 (FIDAS) | 24 Hour mean | 30/04/2025 04:00 |
| PM2.5 particulate matter (Hourly measured) | LOW (1) | 11 µgm-3 (Ref.eq) | 24 Hour mean | 30/04/2025 04:00 |
| 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
- Not Available
- Coordinates (Lat/Long)
- 54.641963, -5.837939
- 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
- 4.6m
- Height
- Metres
- Site Comments
- Marine Highway
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 |
