The Public Protection Division continuously monitors air quality at the two sites in Islington shown as green dots on the map at the top right of this page.  The Upper Street site represents the Urban Background, and the results are indicative of the air quality experienced by the majority of Islington residents for most of the time.  The results at the Roadside site on Holloway Road are indicative of the worst conditions in Islington.
The results of the monitoring from the second quarter of the year are presented in the charts below.  Monthly average figures for particulates and nitrogen dioxide are given as well as the number of days or hours exceeding the relevant objective level during the month.  The maximum 8 hour average concentration of carbon monoxide recorded over each month is also presented.  The monthly results in each chart are combined to give the results for the quarter.