New data shows average annual levels of PM2.5 in central London are almost double the WHO guideline limits

Average annual levels of PM2.5 based on updated 2013 exposure estimates

 

WHO guideline limit = 10 µg/m3

10 to 15

15 to 16

16 to 17

17 to 18

>18

Average annual levels of PM2.5 based on updated 2013 exposure estimates

 

WHO guideline limit = 10 µg/m3

>18

17 to 18

16 to 17

15 to 16

10 to 15

Source: ONS, Mayor of London's Press Office