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
100047goodexcellent91excellent
090046goodexcellent91excellent
080051goodexcellent101excellent
070050goodexcellent101excellent
060044goodexcellent81excellent
050041goodexcellent71excellent
040044goodexcellent81excellent
030042goodexcellent71excellent
020039goodexcellent71excellent
010036goodexcellent71excellent
000034goodexcellent61excellent
230033goodexcellent71excellent
220030goodexcellent71excellent
210027goodexcellent61excellent
200021goodexcellent41excellent
190018excellentexcellent31excellent
180017excellentexcellent21excellent
170013excellentexcellent21excellent
160020excellentexcellent31excellent
150016excellentexcellent31excellent
140019excellentexcellent41excellent
130026goodexcellent61excellent
120038goodexcellent71excellent
110035goodexcellent91excellent