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
130056goodexcellent51excellent
120057goodexcellent41excellent
110052goodexcellent51excellent
100039goodexcellent61excellent
090051goodexcellent122excellent
080056goodexcellent101excellent
070046goodexcellent81excellent
060038goodexcellent81excellent
050037goodexcellent61excellent
040036goodexcellent61excellent
030034goodexcellent61excellent
020030goodexcellent61excellent
010025goodexcellent41excellent
000025goodexcellent51excellent
230024goodexcellent41excellent
220026goodexcellent11excellent
210026goodexcellent21excellent
200024goodexcellent41excellent
190030goodexcellent51excellent
180033goodexcellent51excellent
170033goodexcellent51excellent
160037goodexcellent51excellent
150043goodexcellent41excellent
140051goodexcellent31excellent