SmogRank / World / Iceland / Capital Region / April 2023

Most polluted cities in Capital Region, Iceland, April 2023

2 cities in Capital Region, Iceland ranked by their average PM2.5 over the 30 days. Worst: Hafnarfjörður at 4.1 µg/m³, #1,416 of 1,567 cities in the world. Cleanest: Reykjavík at 3.0. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 3 of these 30 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

  1. 1Hafnarfjörður
    23
  2. 2Reykjavík
    17
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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SmogRank, most polluted cities in Capital Region, Iceland, PM2.5, April 2023, smogrank.com/is/region/capital-region/history/2023-04 (accessed 7 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.