Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
160011excellentexcellent21excellent
15009excellentexcellent21excellent
140012excellentexcellent31excellent
13009excellentexcellent21excellent
120010excellentexcellent31excellent
110018goodexcellent41excellent
100037lightly pollutedexcellent71excellent
090048lightly pollutedexcellent81excellent
080060lightly pollutedexcellent91excellent
070080moderately pollutedexcellent111excellent
060076moderately pollutedgood131excellent
050065moderately pollutedgood141excellent
040062moderately pollutedgood151excellent
030058lightly pollutedgood151excellent
020058lightly pollutedgood161excellent
010064moderately pollutedgood131excellent
000068moderately pollutedexcellent121excellent
230056lightly pollutedexcellent111excellent
220056lightly pollutedexcellent101excellent
210053lightly pollutedexcellent91excellent
200042lightly pollutedexcellent71excellent
190032goodexcellent51excellent
180020goodexcellent41excellent
170015goodexcellent31excellent