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Compliance Dashboard

Note: This dashboard only shows data from the monitoring sites at Heathrow Airport.

The data below is updated automatically each day and shows how the monitoring sites within the network are progressing against national objectives.

Dashboard Overview

The PM10 and NO2 dials show the monitoring site with the highest number of exceedances and may change each month according to the data.

Progress through the
current year

Day 144 of 365

PM10 Exceedances
to date

London Hillingdon Oxford Avenue
3 exceedances

-- 35 exceedances allowed

Average NO2 concentration
to date

London Hillingdon Oxford Avenue
31.0 µgm-3

-- 40 µgm-3 Limit Value

PM10

Progress through year (24 hour exceedances)

NO2

Progress through year (annual mean)