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

Hour
Index value Pollutant Index value Pollutant
0 17 PM10 12 O3
1 14 PM10 14 O3
2 15 PM10 14 O3
3 10 NO2 14 O3
4 12 PM10 14 O3
5 18 NO2 14 O3
6 26 NO2 12 O3
7 29 NO2 10 O3
8 20 NO2 11 O3
9 18 NO2 13 O3
10 17 NO2 15 NO2
11 17 NO2 14 O3
12 17 PM10 14 O3
13 16 NO2 15 NO2
14 15 NO2 15 O3
15 16 NO2 13 O3
16 18 NO2 14 O3
17 19 PM10 12 O3
18 17 NO2 14 NO2
19 16 NO2 15 NO2
20 16 PM10 13 NO2
21 19 PM10 18 NO2
22 13 NO2 13 O3
23 21 PM10 13 NO2

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

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