Oxford Street has the worst levels of nitrogen dioxide (NO2) air pollution in the world, according to an air quality scientist at King’s College.
Dr David Carslaw told the Sunday Times that NO2 levels on the shopping strip are averaging 135 micrograms per cubic metre of air over the last year, and have spiked as high as 463mcg/m3. The EU’s limit for NO2 is an annual mean of 40mcg/m3. There’s another EU measure that says NO2 levels should not exceed 200mcg/m3 in an hour more than 18 times a year; last year we found out that 78% of London’s roads break that one.
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