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
030054lightly pollutedgood131excellent
020054lightly pollutedexcellent91excellent
010054lightly pollutedexcellent101excellent
000054lightly pollutedexcellent101excellent
230053lightly pollutedexcellent101excellent
220050lightly pollutedexcellent91excellent
210049lightly pollutedexcellent91excellent
200039lightly pollutedexcellent61excellent
190032goodexcellent61excellent
180022goodexcellent31excellent
170018goodexcellent41excellent
160017goodexcellent41excellent
150016goodexcellent31excellent
140015goodexcellent31excellent
130018goodexcellent41excellent
120024goodexcellent51excellent
110021goodexcellent41excellent
100027goodexcellent71excellent
090046lightly pollutedexcellent101excellent
080059lightly pollutedexcellent111excellent
070058lightly pollutedexcellent101excellent
060054lightly pollutedexcellent91excellent
050049lightly pollutedexcellent101excellent
040054lightly pollutedexcellent101excellent