Newport M4 Junction 25

Latest Data: Updated 12/12/2018 06:00 GMT

Parameter Index Band Concentration Period
NO2 1 LOW 20 µg/m3 hourly mean
O3 1 LOW 29 µg/m3 8 Hour mean
NO No Data 24 µg/m3 hourly mean
NOXasNO2 No Data 56 µg/m3 hourly mean

Note: Values are based on provisional data. Data are GMT hour ending.

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Parameter Parameter Name
O3 Ozone
NO Nitric Oxide
NO2 Nitrogen dioxide
NOXasNO2 Nitrogen oxides as nitrogen dioxide

Statistics for Newport M4 Junction 25

Site Name Newport M4 Junction 25
Site Type Roadside
Easting, Northing 332688, 189607
Latitude, Longitude 51.601262, -2.973273
OS Grid Ref
Address
Site Comments Site located on highways owned land, between Badminton Road and M4. Site is 5.5m from kerbside, approx 7.5m above road. Area to the north of the site is residential.
Monitoring Network: Welsh Automatic Urban pollution Monitoring
Parameter Date Started Date Ended
Nitrogen dioxide 15/06/2012
Modelled Temperature 15/06/2012
Nitrogen oxides as nitrogen dioxide 15/06/2012
Modelled Wind Speed 15/06/2012
Ozone 15/06/2012
Modelled Wind Direction 15/06/2012
Nitric Oxide 15/06/2012
Black Carbon 15/06/2012 31/10/2012

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