SmogRank / World / Africa / Ghana / Greater Accra
Most polluted cities in Greater Accra, Ghana
3 measured cities, last 30 days; 3 above the WHO 24-hour guideline. Worst: Ashaiman at 20.3 µg/m³, #241 in the world.
About 0 people in these 3 cities breathed unhealthy air on an average day over the last 30 days.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
Cities coloured by their PM2.5 over the last 24 hours. Fires, smoke and ash: Oct 5, the newest UTC day mapped.
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
Estimated: cities without a monitor
Greater Accra cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Atsiaman | ≈ 12 µg/m³ |
| Amanfrom | ≈ 12 µg/m³ |
| Tema New Town | ≈ 11 µg/m³ |
| Gbawe | ≈ 12 µg/m³ |
| Mandela | ≈ 12 µg/m³ |
| Lashibi | ≈ 11 µg/m³ |
| Dome | ≈ 12 µg/m³ |
| Taifa | ≈ 12 µg/m³ |
| Sakumona | ≈ 11 µg/m³ |
| Awoshi | ≈ 12 µg/m³ |
Use this board
SmogRank, most polluted cities in Greater Accra, Ghana, PM2.5, last 30 days to 6 Oct 2026, 23:00 UTC, smogrank.com/gh/region/greater-accra?w=30d.
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.
Updated 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.