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
060094lightly pollutedexcellent151excellent
050067lightly pollutedexcellent121excellent
040070lightly pollutedexcellent111excellent
030061lightly pollutedexcellent111excellent
020051goodexcellent81excellent
010046goodexcellent81excellent
000048goodexcellent71excellent
230046goodexcellent81excellent
220059goodexcellent101excellent
210063lightly pollutedexcellent121excellent
200050goodexcellent101excellent
190052goodexcellent81excellent
180050goodexcellent81excellent
170055goodexcellent91excellent
160063lightly pollutedexcellent101excellent
150073lightly pollutedexcellent121excellent
140073lightly pollutedexcellent131excellent
130081lightly pollutedexcellent141excellent
120076lightly pollutedexcellent131excellent
110071lightly pollutedexcellent141excellent
100082lightly pollutedexcellent151excellent
0900100lightly pollutedexcellent191excellent
0800117moderately pollutedgood211excellent
0700121moderately pollutedgood231excellent