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
220053goodexcellent71excellent
210059goodexcellent51excellent
200045goodexcellent51excellent
190034goodexcellent51excellent
180023goodexcellent31excellent
170019excellentexcellent31excellent
160023goodexcellent31excellent
150011excellentexcellent21excellent
140021goodexcellent51excellent
130033goodexcellent61excellent
120039goodexcellent81excellent
110062lightly pollutedexcellent131excellent
100081lightly pollutedexcellent152excellent
0900100lightly pollutedexcellent171excellent
0800116moderately pollutedexcellent151excellent
0700119moderately pollutedexcellent131excellent
0600143heavily pollutedexcellent161excellent
0500100lightly pollutedexcellent121excellent
040083lightly pollutedexcellent101excellent
030079lightly pollutedexcellent101excellent
020078lightly pollutedexcellent91excellent
010074lightly pollutedexcellent81excellent
000072lightly pollutedexcellent101excellent
230077lightly pollutedexcellent91excellent