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
17008excellentexcellent21excellent
16008excellentexcellent21excellent
15009excellentexcellent21excellent
14007excellentexcellent21excellent
130010excellentexcellent21excellent
120010excellentexcellent21excellent
110019excellentexcellent31excellent
100024goodexcellent51excellent
090036goodexcellent81excellent
080073lightly pollutedexcellent121excellent
070091lightly pollutedexcellent121excellent
060095lightly pollutedexcellent121excellent
050092lightly pollutedexcellent121excellent
040080lightly pollutedexcellent121excellent
030077lightly pollutedexcellent111excellent
020066lightly pollutedexcellent111excellent
010068lightly pollutedexcellent81excellent
000056goodexcellent71excellent
230038goodexcellent71excellent
220035goodexcellent61excellent
210024goodexcellent51excellent
200018excellentexcellent31excellent
190012excellentexcellent21excellent
180012excellentexcellent21excellent