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
090043goodexcellent51excellent
080052goodexcellent71excellent
070047goodexcellent71excellent
060049goodexcellent61excellent
050048goodexcellent61excellent
040046goodexcellent61excellent
030044goodexcellent51excellent
020044goodexcellent61excellent
010046goodexcellent62excellent
000045goodexcellent61excellent
230046goodexcellent61excellent
220045goodexcellent61excellent
210042goodexcellent41excellent
200039goodexcellent31excellent
190037goodexcellent41excellent
180039goodexcellent41excellent
170037goodexcellent41excellent
160040goodexcellent31excellent
150047goodexcellent32excellent
140073lightly pollutedexcellent31excellent
130062lightly pollutedexcellent31excellent
120063lightly pollutedexcellent41excellent
110041goodexcellent31excellent
100037goodexcellent41excellent