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
200017goodexcellent31excellent
190021goodexcellent41excellent
180023goodexcellent41excellent
170022goodexcellent41excellent
160024goodexcellent41excellent
150029goodexcellent31excellent
140037lightly pollutedexcellent31excellent
130062moderately pollutedexcellent31excellent
120049lightly pollutedexcellent31excellent
110020goodexcellent31excellent
100016goodexcellent31excellent
090014goodexcellent31excellent
080021goodexcellent51excellent
070020goodexcellent41excellent
060019goodexcellent41excellent
050023goodexcellent51excellent
040022goodexcellent41excellent
030019goodexcellent41excellent
020017goodexcellent31excellent
010013goodexcellent31excellent
000010excellentexcellent21excellent
230011excellentexcellent21excellent
220017goodexcellent21excellent
210078moderately pollutedexcellent41excellent