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
180090lightly pollutedexcellent31excellent
170094lightly pollutedexcellent41excellent
160095lightly pollutedexcellent81excellent
150076lightly pollutedexcellent61excellent
140062lightly pollutedexcellent51excellent
130057goodexcellent41excellent
120051goodlightly polluted871excellent
110059goodexcellent21excellent
100056goodexcellent51excellent
090065lightly pollutedexcellent91excellent
080063lightly pollutedexcellent91excellent
070074lightly pollutedexcellent81excellent
060050goodexcellent71excellent
050062lightly pollutedexcellent91excellent
040063lightly pollutedexcellent101excellent
030090lightly pollutedexcellent131excellent
020079lightly pollutedexcellent101excellent
010073lightly pollutedexcellent91excellent
000064lightly pollutedexcellent111excellent
230086lightly pollutedexcellent121excellent
220088lightly pollutedexcellent101excellent
2100105moderately pollutedexcellent151excellent
2000120moderately pollutedexcellent131excellent
190087lightly pollutedexcellent111excellent