Legend :
Pollution Index Value
Very Low   0 / 25
Low   25 / 50
Medium   50 / 75
High   75 / 100
Very High   > 100
Prague Yesterday Details

Hour
Index value Pollutant Index value Pollutant
0 22 NO2 26 O3
1 25 PM10 27 O3
2 33 PM10 18 O3
3 24 NO2 17 O3
4 31 PM10 25 PM10
5 23 NO2 27 PM10
6 20 NO2 26 O3
7 28 PM10 36 O3
8 53 PM10 47 O3
9 9 NO2 52 O3
10 10 NO2 52 O3
11 25 PM10 53 O3
12 36 PM10 56 O3
13 36 PM10 59 O3
14 44 PM10 55 O3
15 60 PM10 35 O3
16 63 PM10 53 PM10
17 39 PM10 38 PM10
18 18 PM10 33 O3
19 27 PM10 35 O3
20 15 PM10 35 O3
21 6 NO2 33 O3
22 18 PM10 24 PM10
23 22 PM10 31 O3

NB: the pollutant with the highest value at a certain time determines the overall score of that time

Back to Prague Air Quality Details

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