Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
170028goodexcellent61excellent
160032goodexcellent71excellent
150023goodexcellent61excellent
140025goodexcellent61excellent
130029goodexcellent81excellent
120041lightly pollutedexcellent101excellent
110045lightly pollutedexcellent111excellent
100048lightly pollutedexcellent121excellent
090058lightly pollutedexcellent121excellent
080065moderately pollutedgood131excellent
070051lightly pollutedexcellent111excellent
060042lightly pollutedexcellent101excellent
050037lightly pollutedexcellent111excellent
040033goodexcellent121excellent
030036goodexcellent101excellent
020035goodexcellent101excellent
010035goodexcellent101excellent
000037lightly pollutedexcellent71excellent
230035goodexcellent61excellent
220036goodexcellent71excellent
210035goodexcellent51excellent
200031goodexcellent41excellent
190015goodexcellent21excellent
180010excellentexcellent21excellent