Nitrogen Dioxide Contamination Decreases to Historical Lows in Madrid

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The accumulated air quality data from January to May of this year are the best of the entire historical series. The records of nitrogen dioxide (NO2) demonstrate a reduction of this atmospheric pollutant to more than half of what was achieved in May 2019 - from 62 micrograms per cubic meter to 30 μg/m3. In that year, Central Madrid was already in force.

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Madrid continues to improve its air quality records . This is shown by the data accumulated between January and May 2026, which show that nitrogen dioxide (NO2) has been reduced to more than half of what was achieved in May 2019, going from 62 micrograms per cubic centimeter to 30. With these records, it is the first time that 11 of the 24 stations do not exceed the limit set in the new European regulation. In addition, this is the fifth consecu…