Air quality · PM2.5good
7.4 µg/m³
The available annual series averages 1.5× the WHO annual guideline of 5 µg/m³. The daily average exceeded 15 µg/m³ on 25 days.
The recent period is 19% higher than the preceding period.
Alkmaar
Noord-Holland111.834 residents116,9 km²
76
sensors, 0,7/km²
Public summary
What the measurements in Alkmaar show
The citizen sensor network in Alkmaar, Noord-Holland, contains 76 sensors: an average of 0.7 per km². Projects including Hart van Alkmaar and Luftdaten contribute measurements to this public network.
Noise
Alkmaar does not yet have a reliable municipality-wide noise series. MedeMeter is designed to make local noise patterns near homes visible.
Building the report for Alkmaar…
We're reading the citizen sensors and making sense of the figures.
did you know?Particulate matter (PM2.5) is roughly 30× thinner than a human hair. Small enough to reach deep into your lungs.
