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
160099lightly pollutedexcellent141excellent
150080lightly pollutedexcellent141excellent
140073lightly pollutedexcellent141excellent
130075lightly pollutedexcellent151excellent
120086lightly pollutedexcellent141excellent
110097lightly pollutedexcellent151excellent
1000110moderately pollutedexcellent151excellent
0900112moderately pollutedexcellent131excellent
0800115moderately pollutedexcellent121excellent
0700122moderately pollutedexcellent131excellent
0600123moderately pollutedexcellent121excellent
0500107moderately pollutedexcellent121excellent
0400102moderately pollutedexcellent101excellent
030096lightly pollutedexcellent101excellent
020088lightly pollutedexcellent111excellent
010096lightly pollutedexcellent111excellent
000090lightly pollutedexcellent101excellent
230064lightly pollutedexcellent91excellent
220059goodexcellent91excellent
2100114moderately pollutedexcellent161excellent
2000247severely pollutedgood281excellent
1900187heavily pollutedgood301excellent
1800202severely pollutedgood271excellent
1700205severely pollutedgood261excellent