St Albans City and District Council have urged residents across the district to sign up to air pollution alerts.
The alerts are a free service part of a scheme which is particularly helpful for those suffering from lung or heart conditions such as asthma.
This will work by alerting those signed up with an advance warning as to when air pollution is forecast to moderate, high or very high, helping to reduce the risk of suffering a medical episode.
St Albans City and District Council has subscribed to the Air Quality England service to make it available to all of its residents.
Councillor Chris White, Leader and portfolio holder for climate, environment and transport, said: “We are committed to cutting harmful emissions and making the district carbon neutral by 2030.
“We are making considerable progress with those goals but in the meantime there will still be elevated air pollution from time to time as there is across the country.
“Some people are vulnerable to this and these alerts will be extremely useful, helping them to better plan their days.”
Hertfordshire and Bedfordshire Air Pollution Alert System is open to anyone living or working in the two counties.
To sign up, please go to airqualityengland.co.uk/local-authority/knr-subscription.