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
0900100lightly pollutedexcellent191excellent
0800117moderately pollutedgood211excellent
0700121moderately pollutedgood231excellent
0600129moderately pollutedgood241excellent
0500133moderately pollutedgood241excellent
0400147heavily pollutedgood271excellent
0300140moderately pollutedgood261excellent
0200139moderately pollutedgood281excellent
0100130moderately pollutedgood251excellent
0000124moderately pollutedgood251excellent
2300125moderately pollutedgood241excellent
2200112moderately pollutedgood221excellent
210099lightly pollutedexcellent171excellent
200092lightly pollutedexcellent161excellent
190077lightly pollutedexcellent151excellent
180079lightly pollutedexcellent151excellent
170086lightly pollutedexcellent161excellent
1600102moderately pollutedexcellent191excellent
150084lightly pollutedexcellent151excellent
140087lightly pollutedexcellent171excellent
1300101moderately pollutedexcellent181excellent
120080lightly pollutedexcellent161excellent
110086lightly pollutedexcellent131excellent
100074lightly pollutedexcellent91excellent