Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
190045goodexcellent101excellent
180043goodexcellent91excellent
170036goodexcellent91excellent
160049goodexcellent91excellent
150056goodexcellent91excellent
140057goodexcellent101excellent
130047goodexcellent111excellent
120046goodexcellent101excellent
110034goodexcellent91excellent
100048goodexcellent91excellent
090044goodexcellent81excellent
080032goodexcellent71excellent
070038goodexcellent71excellent
060026goodexcellent81excellent
050031goodexcellent81excellent
040031goodexcellent81excellent
030043goodexcellent81excellent
020042goodexcellent91excellent
010042goodexcellent111excellent
000041goodexcellent101excellent
230045goodexcellent91excellent
220039goodexcellent81excellent
210036goodexcellent71excellent
200029goodexcellent71excellent