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
070036goodexcellent41excellent
060031goodexcellent41excellent
050035goodexcellent41excellent
040032goodexcellent41excellent
030032goodexcellent41excellent
020035goodexcellent41excellent
010031goodexcellent41excellent
000034goodexcellent41excellent
230039goodexcellent51excellent
220034goodexcellent31excellent
210026goodexcellent31excellent
200026goodexcellent31excellent
190030goodexcellent31excellent
180031goodexcellent21excellent
170027goodexcellent21excellent
160027goodexcellent21excellent
150034goodexcellent21excellent
140038goodexcellent21excellent
130027goodexcellent21excellent
120032goodexcellent21excellent
110038goodexcellent31excellent
100036goodexcellent31excellent
090032goodexcellent41excellent
080028goodexcellent41excellent