L’aria in Ticino nel 2014 è risultata meno inquinata dell’anno precedente, grazie in particolare all’estate meno soleggiata degli ultimi 130 anni, ma le principali sostanze controllate hanno comunque superato i limiti previsti, secondo i dati pubblicati dal Dipartimento del territorio.
L’estate piovosa ha contribuito a mantenere bassi i livelli di ozono, i cui superamenti dei limiti orari sono stati i tra i più bassi degli ultimi 25 anni di misurazioni nel cantone. In calo anche le polveri sottili con solo tre stazioni, Chiasso, Mendrisio e Bioggio, che registrano una media annua superiore al limite.
L’evoluzione è quindi positiva, ma c’è prudenza nel tracciare una previsione futura, a causa dei diversi superamenti dei limiti e dell’anno eccezionale dal punto di vista della meteo.
sf
Dal Quotidiano:
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