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).

Select year:

Select pollutant:

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual Mean
-	-	-	-	-	-	-	-	-	-	-	-	-	µg/m³
-	-	-	-	-	-	-	-	-	-	-	-	-	Data Capture
-	-	-	-	-	-	-	-	-	-	-	-	P	Status

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.

Select year:

Select pollutant:

Select averaging period:

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.

Site Code:	CAH
Location:	51.5028, 0.0521
Date Commissioned:	Oct. 1, 2006
Date Decommissioned:	May 31, 2022
Classification:	Airport
Comments:
The monitoring site was located on the roof of the building and is now decommissioned. The site measured NOx and NO₂ up until 31 May 2022 and PM₁₀ up until 30 September 2020. The historic data are available for download.

City Aviation House