The drastic reduction in traffic due to lockdown results in significantly lower levels of primary pollutants such as NO2 throughout the territory of the Valencia Region https://abs.twimg.com/emoji/v2/... draggable="false" alt="◾️" title="Black medium small square" aria-label="Emoji: Black medium small square">, especially in urban environments https://abs.twimg.com/emoji/v2/... draggable="false" alt="🟥" title="Red square" aria-label="Emoji: Red square">
Differences between 2020 and average from 2010 to 2019https://abs.twimg.com/emoji/v2/... draggable="false" alt="👇" title="Down pointing backhand index" aria-label="Emoji: Down pointing backhand index">

However, it& #39;s not the same for #ozone, whose nonlinear chemistry results in above-average levels in the period 5-12 April. Data show how difficult is to implement ozone reduction actions
Differences between 2020 and average from 2010 to 2019.