SmogRank / World / Ghana / Greater Accra / January 2025

Most unhealthy days in Greater Accra, Ghana, January 2025

1 city in Greater Accra, Ghana ranked by its share of unhealthy days over the 31 days. The most unhealthy days: Accra, Ghana, 12 of 23 measured days. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

  1. 1Accralow-cost sensors
    12 of 23

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.

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

All cities in the world, January 2025 · All cities in Ghana, January 2025 · Greater Accra now

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SmogRank, most polluted cities in Greater Accra, Ghana, by unhealthy days, PM2.5, January 2025, smogrank.com/gh/region/greater-accra/history/2025-01?by=days (accessed 7 Oct 2026).

Download top 10 by average (PNG)

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.