Values are particulate pollution, PM 10, (μg/m3) monthly average (from 24 hour average values). St Peters Public School is compared to the top 5 sites for monthly PM 10 in Sydney, according to the NSW Office of Environment & Heritage. There is a violation of The National Environment Protection (Ambient Air Quality) Measure when PM 10 measures over 50 μg/m3 on average for a day, or 25 for a year. Below are the monthly averages for the first three months of 2018.