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
140019excellentexcellent31excellent
130022goodexcellent41excellent
120019excellentexcellent41excellent
110029goodexcellent41excellent
100052goodexcellent71excellent
090042goodexcellent61excellent
080062lightly pollutedexcellent91excellent
070085lightly pollutedexcellent111excellent
060059goodexcellent91excellent
050054goodexcellent71excellent
040045goodexcellent51excellent
030052goodexcellent61excellent
020051goodexcellent61excellent
010046goodexcellent61excellent
000047goodexcellent71excellent
230042goodexcellent61excellent
220034goodexcellent61excellent
210032goodexcellent51excellent
200026goodexcellent41excellent
190017excellentexcellent31excellent
180011excellentexcellent21excellent
170010excellentexcellent21excellent
160010excellentexcellent21excellent
150035goodexcellent21excellent