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Legend :
Pollution Index Value
Very Low   0 / 25
Low   25 / 50
Medium   50 / 75
High   75 / 100
Very High   > 100
La Roche-sur-Yon Yesterday Details

Hour
Index value Pollutant Index value Pollutant
0 - 24 O3
1 - 24 O3
2 - 24 O3
3 - 26 O3
4 - 20 O3
5 - 19 O3
6 - 12 O3
7 - 16 NO2
8 - 24 NO2
9 - 23 NO2
10 - 17 NO2
11 - 24 O3
12 - 26 O3
13 - 26 O3
14 - 26 O3
15 - 24 O3
16 - 16 O3
17 - 17 O3
18 - 16 O3
19 - 15 O3
20 - 13 PM10
21 - 19 O3
22 - 26 O3
23 - 24 O3

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

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