Television and radio weather bulletins could feature air quality alerts in their reports after broadcasters were asked to help warn Londoners when there are high levels of pollution.
City Hall has written to the BBC, ITV and LBC to suggest they include the updates in their reports as part of efforts to expand the existing city-wide alert system.
Warnings are currently displayed across London’s transport network on electronic signs at bus-stops, Tube stations and on the busiest main roads, so people can take preventative action.
The broadcasters are understood to be considering the request.
It comes amid further warnings from City Hall and environmentalists over the capital’s dangerous pollution levels.
London Mayor Sadiq Khan has announced plans to audit the capital’s most polluted schools, with thousands of children being exposed to illegal levels of pollution.
In October, a £10 ‘T-charge’ will also be introduced fordrivers using the most polluting cars in central London.
Mr Khan said: “London’s filthy air poses a significant threat to our health including harming the development of children’s lungs, and I’m committed to tackling this issue so Londoners can breather the clean air they deserve.
“I’m pressing ahead with bold and ambitious plans to improve our air quality in the capital, through measures such as the T-charge, the launch of which is only a few weeks away, as well as in-depth work to help us understand the full impact of poor air.
“Broadcasters are already doing excellent work covering the threat to public health posed by the capital’s filthy air and I’m asking them to go even further and help empower Londoners to reduce their exposure to harmful pollution.”
City Hall has promised “hard-hitting” measures to combat the capital’s toxic air at schools, which will begin with the inspection of London’s 50 most polluted schools.
Recommendations are expected to include moving entrances to schools away from main roads and changes to equipment used to lower emissions.
All 50 primaries on the list had readings of nitrogen dioxide, which is linked to lung conditions, of well over 40 micrograms per cubic metre, the legal limit.
Read more London news here.