Ghana Air Quality 2026: First Improvement Since 2021, But Still Four Times Above WHO Safe Limits

The IQAir 2025 World Air Quality Report, released in March 2026, recorded Ghana’s national annual average PM2.5 concentration at 21.3 micrograms per cubic metre (µg/m³) – down sharply from 35.8 µg/m³ in 2024. That is a decline of more than 40% in a single year, and the first recorded improvement in Ghana air quality 2025 data since 2021. The report ranks Ghana approximately 32nd most polluted country globally and approximately 11th in Africa.

If that sounds technical, here is the plain-English version: PM2.5 refers to tiny airborne particles small enough to enter the lungs and bloodstream. The lower the number, the cleaner the air. Ghana’s number just fell by one of the largest single-year declines recorded in available IQAir data – and that pushed it from 8th to approximately 11th most polluted on the continent, and approximately 32nd globally.

That shift matters because it is the first sign in years that Ghana’s air pollution trajectory can reverse. But the caveat is significant: 21.3 µg/m³ is still more than four times the World Health Organisation’s (WHO) annual safe guideline of 5 µg/m³. The air most Ghanaians breathe remains, by global health standards, unsafe. What the 2025 data confirms is that the trend is now moving in the right direction – and that the policy decisions made in the next few years will determine how far it goes.

What the Numbers Show

Ghana’s air quality had been deteriorating every year from 2021 through 2024. The 2025 reading is the first break in that pattern. The five-year trend is stark.

The WHO annual guideline sits at 5 µg/m³. Ghana’s 2025 figure, while its best in five years, is still more than four times that threshold. At the city level, 2024 data showed Kumasi overtaking Accra as Ghana’s most polluted city, with Kumasi recording 39.5 µg/m³ against Accra’s 36.3 µg/m³. Accra was ranked the 16th most polluted capital city in the world in 2024.

What Drove the Improvement

The IQAir report does not point to a single cause for Ghana’s improvement. Several factors appear to have converged.

The most significant policy development was Ghana’s first comprehensive Air Quality Management Regulation, passed in September 2025. The regulation introduced mandatory air quality reporting, replacing a previous voluntary system, and established a centralised data system – the kind of institutional infrastructure that makes pollution accountability possible.

Alongside the regulation, the Breathe Accra initiative has expanded a network of 60 low-cost sensors across the capital, complemented by three TEOM reference-grade monitoring stations. Breathe Accra is a community-driven project led by Professor Kofi Amegah’s team at the University of Cape Coast, funded by the Clean Air Fund, and part of the Breathe Cities global initiative run in partnership with Bloomberg Philanthropies and C40 Cities. The network first went live in 2022 and was the first to provide real-time air pollution data to the public in Accra. This expanding measurement infrastructure matters: data quality affects reported averages, and better monitoring means more accurate readings.

Analysts have also noted a meteorological explanation. The 2024 peak of 35.8 µg/m³ may have been partly driven by an unusually severe harmattan season – the dry, dust-laden winds that sweep south from the Sahara across West Africa between November and March. A less intense harmattan in 2025 would, on its own, pull the annual average down considerably. The IQAir report does not rule this out. This distinction matters: a harmattan-driven drop would reverse the moment conditions return. A policy-driven drop is structural. Right now the 2025 data cannot confirm which is dominant – the honest read is that both factors likely contributed. What would make the case for a genuine structural shift is a second consecutive year of improvement, regardless of seasonal conditions.

What it does confirm is that Ghana is one of only seven African countries with real-time air pollution monitors. That technical capacity puts Ghana in a stronger position than the majority of its neighbours when it comes to measuring and responding to the problem.

How Ghana Compares to Its Neighbours

Ghana’s 2025 reading of 21.3 µg/m³ places it in the middle of a close cluster of West African nations. The differences within the subregion are relatively small – with one clear exception.

Ivory Coast stands out at 15.8 µg/m³, more than 5 µg/m³ below Ghana – the cleanest reading in the West African subregion. At the other end of the scale, Chad at 53.6 µg/m³ and D.R. Congo at 50.2 µg/m³ remain the two most polluted countries on the continent.

One important note on the Central African figures: the IQAir report flags that the closure of US Embassy air quality monitoring stations in March 2025 removed a key data source for several countries in the region. Some apparent improvements in Central Africa may reflect missing data rather than cleaner air. For Ghana, where monitoring infrastructure has been expanding, the 2025 data is considered comparatively reliable.

The Health Cost: What 21.3 µg/m³ Still Means

The improvement in Ghana’s air quality reading is real. But 21.3 µg/m³ is not a safe number. It is a number that carries a documented death toll.

WHO estimates indicate that approximately 28,000 deaths occur in Ghana each year due to air pollution – roughly one death every 19 minutes. In 2019, WHO data showed air pollution-related deaths in Ghana (23,792) exceeded the combined totals for malaria (21,597), tuberculosis (10,222), and HIV/AIDS (14,620). That is not a historical curiosity. It is the baseline against which the current data should be read.

The economic dimension is equally stark. A WHO Urban Health Initiative analysis found that meeting WHO air quality guideline values could prevent 1,790 deaths annually in Greater Accra, with a corresponding health economic saving of approximately USD 247 million (GHS 2.7 billion at current Bank of Ghana indicative rates). That figure is based on 2018 data and was produced by WHO economists Santos, Nonvignon and colleagues; the current welfare cost of inaction is likely higher. Separately, the Clean Air Fund estimates that cumulative health savings from implementing clean air interventions in Accra between 2023 and 2040 could reach approximately USD 216 million – equivalent to roughly 20% of Ghana’s total government health budget in 2022.

Children carry a disproportionate share of the exposure. PM2.5 particles are fine enough to pass through lung tissue into the bloodstream, affecting brain development, lung capacity and long-term cardiovascular health. In communities where charcoal cooking fires burn indoors and tro-tros idle outside schools, exposure is not an occasional risk – it is a daily constant. Expats and returning diaspora should factor air quality into decisions about medical insurance coverage in Ghana.

What This Means If You Are Moving To or Investing in Ghana

For diaspora members considering a return, families planning to relocate, or foreign investors evaluating Accra as a base, air quality is a practical variable – not just a policy talking point. Our Ghana safety and relocation guide covers broader living considerations for newcomers.

At 21.3 µg/m³, Accra’s air is measurably cleaner than it was in 2024, but it remains in a pollution band that WHO classifies as carrying serious health risks for long-term exposure. Children and older adults are the most vulnerable groups. For families moving from cities with relatively clean air – London, Toronto, or Sydney, for example – the adjustment in daily exposure is significant. Using a high-quality indoor air purifier and limiting prolonged outdoor activity during the harmattan months (November to March, when levels spike) are the two most practical mitigation steps available.

Road transport is the single largest contributor to Accra’s pollution – estimates suggest road transport accounts for close to 40% of PM2.5 concentrations in the city, primarily because 70% of daily commuters rely on tro-tros, many of which are older, higher-emission vehicles. Neighbourhoods with lower traffic density and better access to paved roads tend to have meaningfully lower exposure. This is worth factoring into any housing decision.

For investors, the Clean Air Fund has specifically identified air pollution as a risk to Accra’s services sector productivity, noting links to reduced workforce output, higher absenteeism, and lower consumer footfall. The converse is also true: cities that improve air quality tend to see measurable gains in these areas. The regulatory and monitoring infrastructure now being built in Ghana is the foundation for that trajectory.

What Needs to Happen Next

Ghana’s 2025 Air Quality Management Regulation was specifically highlighted in the IQAir report as a legal model for the African continent. It creates, for the first time, a mandatory reporting structure and a centralised data system. The quality of what follows will depend entirely on enforcement – regulations that exist on paper without institutional follow-through tend to produce neither cleaner air nor reliable data.

Beyond enforcement, the scale of the opportunity is significant. A long-term policy scenario modelling a major shift from private cars to efficient public transport, walking and cycling in Accra was estimated to avert up to 5,500 premature deaths from improved air quality, with an overall health economic saving of USD 15 billion over 35 years. That is a substantial return on infrastructure investment, framed in the language policymakers and development finance institutions understand.

For now, Ghana’s position as one of only seven African countries with real-time air monitoring stations is an advantage worth protecting. Africa’s 463 monitoring stations collectively account for just 1% of the global total. Having the data to see the problem clearly is the prerequisite for solving it. One good year is encouraging. A sustained downward trend, backed by consistent policy and enforceable standards, is what turns a statistical improvement into a public health outcome.

Sources

• MyJoyOnline: “Ghana’s air quality improves for the first time since 2021; country places 11th in Africa – IQAir 2025 report” (March 27, 2026)
• IQAir: 2025 World Air Quality Report
• World Health Organisation: Ambient Air Quality and Health Fact Sheet
• WHO Urban Health Initiative: Accra pilot project (Santos et al., economic costs of air pollution in Accra, 2020)
• Clean Air Fund: Ghana country page
• Clean Air Fund: Accra joins Breathe Cities initiative