Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0400132severely pollutedgood231excellent
0300138severely pollutedgood251excellent
0200158severely pollutedgood321excellent
0100167severely pollutedgood301excellent
0000175severely pollutedgood321excellent
2300186severely pollutedgood341excellent
2200200severely pollutedgood341excellent
2100186severely pollutedgood341excellent
2000193severely pollutedgood331excellent
1900164severely pollutedgood321excellent
1800158severely pollutedgood311excellent
1700159severely pollutedgood321excellent
1600160severely pollutedgood341excellent
1500135severely pollutedgood281excellent
1400133severely pollutedgood311excellent
1300128severely pollutedgood281excellent
1200114heavily pollutedgood251excellent
110096heavily pollutedgood211excellent
100089heavily pollutedgood191excellent
090087heavily pollutedgood171excellent
0800104heavily pollutedgood171excellent
070088heavily pollutedgood171excellent
060090heavily pollutedgood171excellent
050094heavily pollutedgood171excellent