SmogRank / World / Ghana / Greater Accra / January 2023
Most polluted cities in Greater Accra, Ghana, January 2023
1 city in Greater Accra, Ghana ranked by their average PM2.5 over the 31 days. The only one: Accra at 59.0 µg/m³, #21 of 1,225 cities in the world. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for 7 of these 31 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.
- 1Accralow-cost sensors 153
Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.
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
All cities in the world, January 2023 · All cities in Ghana, January 2023 · Greater Accra now
Use this board
SmogRank, most polluted cities in Greater Accra, Ghana, PM2.5, January 2023, smogrank.com/gh/region/greater-accra/history/2023-01 (accessed 7 Oct 2026).
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.