Diffusion tube data

Across Greater Manchester there is a network of 400 passive diffusion tubes, which collect data on nitrogen dioxide levels annually to supplement the automatic monitoring stations and to see whether we have met our air quality targets. You can find the results for each diffusion tube monitor by clicking on the stations below.

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Latest diffusion tube data key

Rural background

Target achieved

Target not achieved

Suburban background

Target achieved

Target not achieved

Urban background

Target achieved

Target not achieved

Urban traffic

Target achieved

Target not achieved