The table below shows whether pollution levels recorded at the site you have selected remained within the Government's Air Quality Strategy Objectives in 2018.
For further basic statistics click on the button below, or for more precise statistics, use the Statistics Calculator.
Was it achieved?
125 ug/m3 as a 24 hour mean, not to be exceeded more than 3 times a year
266 ug/m3 as a 15 minute mean, not to be exceeded more than 35 times a year
350 ug/m3 as a 1 hour mean, not to be exceeded more than 24 times a year
100 ug/m3 as an 8 hour mean, not to be exceeded more than 10 times a year
200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year
40 ug/m3 as an annual mean
* Note that results are excluded where analysers have not returned valid data for at least 90% of the year, unless a short-term objective was exceeded.