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
100027goodexcellent21excellent
090029goodexcellent21excellent
080024goodexcellent21excellent
070031goodexcellent31excellent
060035goodexcellent31excellent
050028goodexcellent31excellent
040038goodexcellent61excellent
030049goodexcellent71excellent
020046goodexcellent61excellent
010039goodexcellent51excellent
000041goodexcellent41excellent
230043goodexcellent51excellent
220048goodexcellent61excellent
210041goodexcellent51excellent
200034goodexcellent51excellent
190032goodexcellent41excellent
180025goodexcellent31excellent
170025goodexcellent31excellent
160025goodexcellent21excellent
150016excellentexcellent21excellent
140016excellentexcellent21excellent
130017excellentexcellent21excellent
120019excellentexcellent21excellent
110019excellentexcellent21excellent