Worst air pollution Port Harcourt, today and tomorrow
Today (23 August): Air quality in Port Harcourt is moderate. AQI, PM2.5, NO2, and PM1 are moderate; O3 and HCHO are fair; PM10, SO2, and CO are good. Pollution peaks around 11:00 PM (PM1: 44.7/100).
Tomorrow (24 August 2026): Air quality in Port Harcourt is moderate. All pollutants stay as today. Pollution peaks around 12:00 AM (PM1: 44.9/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Port Harcourt's air quality reflects the flat Nigerian Niger Delta coastal position on the Bonny River, with vehicle traffic on surrounding roads and the oil refinery, gas flaring, and vehicle density corridor generating elevated PM2.5 and SO₂. The extraordinary Niger Delta's pervasive oil and gas infrastructure creates distinctive petroleum-related emissions, while the tropical wet season's convective rain provides periodic cleansing and Port Harcourt maintains Nigeria's most distinctively petroleum industrial coastal air quality environment throughout the year.
Today - 23 August | Pollution peaks at 23:00
AQI:
Moderate
44.7/100
PM2.5 (fine particles):
Moderate
41.4/100
PM10 (coarse particles):
Good
13.1/100
NO2 (nitrogen dioxide):
Moderate
41.7/100
O3 (ozone):
Fair
22.7/100
SO2 (sulfur dioxide):
Good
14.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
26.2/100
PM1 (ultrafine particles):
Moderate
44.7/100
Levels show the poorest local air quality during the day
Tomorrow - 24 August | Pollution peaks at 00:00
AQI:
Moderate
44.9/100
PM2.5 (fine particles):
Moderate
41.5/100
PM10 (coarse particles):
Good
13.3/100
NO2 (nitrogen dioxide):
Moderate
42.2/100
O3 (ozone):
Fair
28.4/100
SO2 (sulfur dioxide):
Good
13.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
27.7/100
PM1 (ultrafine particles):
Moderate
44.9/100
Frequently Asked Questions
Is air quality bad in Port Harcourt right now?
On 23 August 2026, overall air quality in Port Harcourt is moderate. AQI is the main air quality indicator at 44.7/100. Pollution peaks around 11:00 PM (PM1: 44.7/100).
Will air quality be worse tomorrow in Port Harcourt?
On 24 August 2026, air quality conditions in Port Harcourt will be similar to today, with AQI forecast at moderate at 44.9/100. Pollution peaks around 12:00 AM (PM1: 44.9/100).
When is air pollution at its worst in Port Harcourt?
In Port Harcourt, road traffic, heavy industry such as steel, cement, or petrochemical processing, together with shipbuilding and port operations are the main local sources, with conditions worsening when dry, windy weather picks up. These wind events can carry dust in from the surrounding arid landscape. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Port Harcourt based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 24 August 2026 at 02:28 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
Get the full experience in the Airmine app.