Worst air pollution Owerri, today and tomorrow
Today (23 August): Air quality in Owerri is moderate. AQI, PM2.5, and PM1 are moderate; NO2 and HCHO are fair; PM10, O3, SO2, and CO are good. Pollution peaks around 11:00 PM (PM1: 48.1/100).
Tomorrow (24 August 2026): Air quality in Owerri is poor. AQI worsens to poor; PM10 increases to fair; NO2 increases to moderate; O3 increases to fair; SO2 increases to fair; PM1 increases to poor; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 60.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Owerri's air quality reflects the flat southeastern Nigeria Imo River forest zone at 91 metres, with vehicle traffic on surrounding roads and the vehicle density, informal industrial, and government corridor generating elevated PM2.5 and black carbon. The tropical wet season's convective rain provides periodic cleansing, while dry season Harmattan dust and agricultural burning elevate PM10 and Owerri generally maintains moderate to elevated southeastern Nigerian state capital readings throughout most of the year.
Today - 23 August | Pollution peaks at 23:00
AQI:
Moderate
48.1/100
PM2.5 (fine particles):
Moderate
43.7/100
PM10 (coarse particles):
Good
15.8/100
NO2 (nitrogen dioxide):
Fair
30.7/100
O3 (ozone):
Good
18.7/100
SO2 (sulfur dioxide):
Good
12.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
30.1/100
PM1 (ultrafine particles):
Moderate
48.1/100
Levels show the poorest local air quality during the day
Tomorrow - 24 August | Pollution peaks at 22:00
AQI:
Poor
60.2/100
PM2.5 (fine particles):
Moderate
52.4/100
PM10 (coarse particles):
Fair
25.1/100
NO2 (nitrogen dioxide):
Moderate
41.4/100
O3 (ozone):
Fair
21.6/100
SO2 (sulfur dioxide):
Fair
22.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
38.3/100
PM1 (ultrafine particles):
Poor
60.2/100
Frequently Asked Questions
Is air quality bad in Owerri right now?
On 23 August 2026, overall air quality in Owerri is moderate. AQI is the main air quality indicator at 48.1/100. Pollution peaks around 11:00 PM (PM1: 48.1/100).
Will air quality be worse tomorrow in Owerri?
On 24 August 2026, air quality conditions in Owerri will be worse than today, with AQI forecast at poor at 60.2/100. Pollution peaks around 10:00 PM (PM1: 60.2/100).
When is air pollution at its worst in Owerri?
Pollution in Owerri typically rises when vehicle traffic and agricultural activity combine, especially once dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. Such events are most common in the drier shoulder seasons.
Are air quality levels in Owerri 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.
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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.
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