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
030071lightly pollutedexcellent81excellent
020074lightly pollutedexcellent91excellent
010079lightly pollutedexcellent91excellent
000075lightly pollutedexcellent111excellent
230073lightly pollutedexcellent71excellent
220061lightly pollutedexcellent51excellent
210025goodexcellent31excellent
200015excellentexcellent11excellent
190011excellentexcellent11excellent
18008excellentexcellent11excellent
170013excellentexcellent11excellent
160012excellentexcellent21excellent
150015excellentexcellent21excellent
140016excellentexcellent21excellent
130019excellentexcellent31excellent
120022goodexcellent41excellent
110035goodexcellent51excellent
100046goodexcellent51excellent
090049goodexcellent51excellent
080063lightly pollutedexcellent81excellent
070077lightly pollutedexcellent111excellent
0600107moderately pollutedexcellent101excellent
0500112moderately pollutedexcellent91excellent
040085lightly pollutedexcellent71excellent