‘Nowcasting’ Pollution on the Streets of London

From The Atlantic Cities, a (nearly) real-time map showing air quality and pollution in London.

What’s more telling about these maps though, whether you live in London or not, is the way they they visually highlight the predominant source of the problem: “Much of the pollution in London,” the researchers write, “is associated with traffic.”

We’re essentially looking at the city’s street network, with the busiest roads also doubling as the worst sources of pollution. And that pattern would appear the same in cities everywhere. All of the pollution levels currently shown are considered low and unlikely to cause health effects. But these pictures give a good indication of where we might want to target efforts to reduce pollution even further.