|Site Code:||CAH||Location:||51.5028, 0.0521|
|Date Commissioned:||Oct. 1, 2006|
|The monitoring site is located on the roof of the building, and currently measures NOx and NO2. The site also measured PM10 up until 30 September 2020, and the historic data are available for download.|
The latest available hourly concentrations are shown below. The hourly data air quality index (AQI) is also shown for relevant pollutants. Further information on the AQI can be found here.
|Parameter||Concentration||Period||Air Quality Index (AQI)||Latest reading for hour commencing|
|Nitrogen Dioxide||15.2 µg/m3||1-hour mean||22/01/2022 13:00|
|Nitrogen Oxides||22.1 µg/m3||1-hour mean||22/01/2022 13:00|
The monthly data below are average concentration data, followed by data capture rates (shown as a percentage of each month). Concentrations can be displayed for any available pollutant and year by selecting from the dropdown boxes. Average concentrations are classified as ratified (R) or provisional (P).
The graph below shows average concentration data for the selected year, pollutant and averging period. The graph can be updated by selecting options from the dropdown boxes.
Historic average concentration data for this analyser are available for download in a csv format. Select a pollutant, year and averaging period (hourly or daily) and click the Download CSV button to submit a request.