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
070026goodexcellent31excellent
060022goodexcellent31excellent
050020excellentexcellent31excellent
040022goodexcellent31excellent
030021goodexcellent31excellent
020022goodexcellent41excellent
010028goodexcellent41excellent
000033goodexcellent51excellent
230018excellentexcellent41excellent
220025goodexcellent41excellent
210030goodexcellent51excellent
200026goodexcellent51excellent
190044goodexcellent61excellent
180045goodexcellent61excellent
170051goodexcellent51excellent
160026goodexcellent31excellent
150029goodexcellent31excellent
140031goodexcellent31excellent
130035goodexcellent31excellent
120032goodexcellent41excellent
110038goodexcellent41excellent
100044goodexcellent41excellent
090032goodexcellent31excellent
080042goodexcellent51excellent