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Air quality

Air-quality sensor placement

Where should a city put a limited number of air-quality sensors?

Validated in

Chișinău, Moldova

Map of Chișinău with the tropospheric nitrogen dioxide column for 2025, highest over the city centre and falling towards the edges.

Data the analysis reads

Map of Chișinău coloured by tropospheric nitrogen dioxide for 2025, with the mean, the 5th and 95th percentiles and a histogram of values inside the city boundary.
Tropospheric nitrogen dioxide, 2025 mean. Copernicus Sentinel-5P. Input data, not an analysis result.

What it does

  1. Maps population density alongside emission sources and road networks.
  2. Scores candidate locations on the coverage they would add.
  3. Ranks placements for the size of network the city can afford.

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