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
080032goodexcellent81excellent
070028goodexcellent61excellent
060022goodexcellent51excellent
050023goodexcellent51excellent
040022goodexcellent51excellent
030021goodexcellent41excellent
020020goodexcellent41excellent
010016goodexcellent31excellent
000016goodexcellent31excellent
230017goodexcellent31excellent
220017goodexcellent11excellent
210017goodexcellent21excellent
200016goodexcellent31excellent
190021goodexcellent41excellent
180023goodexcellent41excellent
170022goodexcellent41excellent
160024goodexcellent41excellent
150029goodexcellent31excellent
140037lightly pollutedexcellent31excellent
130062moderately pollutedexcellent31excellent
120049lightly pollutedexcellent31excellent
110020goodexcellent31excellent
100016goodexcellent31excellent
090014goodexcellent31excellent