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
170010excellentexcellent11excellent
160015excellentexcellent11excellent
150010excellentexcellent11excellent
140013excellentexcellent11excellent
130016excellentexcellent21excellent
120021goodexcellent21excellent
110025goodexcellent41excellent
100039goodexcellent51excellent
090055goodexcellent81excellent
080073lightly pollutedexcellent91excellent
070074lightly pollutedexcellent51excellent
060063lightly pollutedexcellent21excellent
050050goodexcellent31excellent
040038goodexcellent31excellent
030038goodexcellent21excellent
020024goodexcellent21excellent
010022goodexcellent11excellent
000012excellentexcellent11excellent
230012excellentexcellent11excellent
220011excellentexcellent11excellent
210011excellentexcellent11excellent
200010excellentexcellent11excellent
190011excellentexcellent11excellent
180013excellentexcellent11excellent