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
030017excellentexcellent61excellent
020035goodexcellent61excellent
010029goodexcellent61excellent
000034goodexcellent61excellent
230040goodexcellent71excellent
220038goodexcellent61excellent
210033goodexcellent51excellent
200016excellentexcellent31excellent
190012excellentexcellent21excellent
180011excellentexcellent21excellent
170016excellentexcellent21excellent
160012excellentexcellent11excellent
150011excellentexcellent11excellent
140013excellentexcellent21excellent
13007excellentexcellent11excellent
12005excellentexcellent11excellent
11009excellentexcellent11excellent
100014excellentexcellent21excellent
090027goodexcellent41excellent
080024goodexcellent31excellent
070021goodexcellent41excellent
060021goodexcellent41excellent
050018excellentexcellent31excellent
040015excellentexcellent21excellent