This site shows air quality based on readings from Open Source sensors from Luftdaten.

You can compare readings from differet sensors/times using the drop down boxes in the pages with visualisations.

The data for this site come from the Luftdaten data archive.

About Particulates (from Wikipedia)

Particulate matter (PM) is microscopic solid or liquid matter suspended in the atmosphere of Earth. Sources of particulate matter can be natural or anthropogenic. They have impacts on climate and precipitation that adversely affect human health.

Source: Wikipedia (lightly edited for readability)

Shows air quality by day of the week and time of day. Each segment shows average (mean) air quality particulate readings for a one hour block. Red indicates the highest air pollution levels.

Colour range runs from zero to the WHO limit
Units: micrograms per metre cubed (µg/m3)

Shows air quality particulate readings as 24 hour means. Each point shows the average air quality reading for the 24 hours preceding it. This lets us measure the air quality against air quality indexes.

Red line indicates the WHO limit
Units: micrograms per metre cubed (µg/m3)

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