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London's Air Quality Soars: 40% NO2 Reduction Achieved!

3/16/2026

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Summary

Story summary

London is among 19 global locations that reduced NO2 and PM2.5 by more than 20% over the past 15 years, according to Breathe Cities.
The reductions followed the Ultra Low Emission Zone expansion and investments in cycling infrastructure and electric vehicles.
NO2 levels fell nearly 40 percent, and PM2.5 dropped about 25 percent.
The report highlights bold urban policies as a driver of rapid air-quality improvements.

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Story summary

London is among 19 global locations that reduced NO2 and PM2.5 by more than 20% over the past 15 years, according to Breathe Cities.
The reductions followed the Ultra Low Emission Zone expansion and investments in cycling infrastructure and electric vehicles.
NO2 levels fell nearly 40 percent, and PM2.5 dropped about 25 percent.
The report highlights bold urban policies as a driver of rapid air-quality improvements.