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
190071lightly pollutedexcellent81excellent
180077lightly pollutedexcellent81excellent
170050goodexcellent41excellent
160029goodexcellent31excellent
150031goodexcellent21excellent
140054goodexcellent61excellent
130054goodexcellent71excellent
120050goodexcellent61excellent
110063lightly pollutedexcellent91excellent
100092lightly pollutedexcellent101excellent
090093lightly pollutedexcellent141excellent
0800132moderately pollutedexcellent191excellent
0700135moderately pollutedexcellent201excellent
0600142heavily pollutedexcellent201excellent
0500142heavily pollutedgood221excellent
0400146heavily pollutedgood211excellent
0300152heavily pollutedgood221excellent
0200141heavily pollutedgood211excellent
0100122moderately pollutedexcellent181excellent
0000116moderately pollutedexcellent171excellent
2300152heavily pollutedexcellent201excellent
2200180heavily pollutedgood231excellent
2100176heavily pollutedgood221excellent
2000157heavily pollutedexcellent191excellent