Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0000102heavily pollutedgood151excellent
230093heavily pollutedgood141excellent
220092heavily pollutedgood131excellent
210093heavily pollutedgood131excellent
200079moderately pollutedexcellent91excellent
190064moderately pollutedexcellent91excellent
180033goodexcellent51excellent
170022goodexcellent41excellent
160020goodexcellent41excellent
150017goodexcellent41excellent
140013goodexcellent31excellent
130017goodexcellent41excellent
120019goodexcellent41excellent
110020goodexcellent41excellent
100018goodexcellent31excellent
090014goodexcellent21excellent
080017goodexcellent21excellent
070014goodexcellent11excellent
060014goodexcellent11excellent
050014goodexcellent11excellent
040013goodexcellent11excellent
030013goodexcellent11excellent
020012excellentexcellent11excellent
010010excellentexcellent11excellent