Air Quality Index (AQI) in Sierra Leone 🇸🇱
Live Air Quality Index (AQI) and PM2.5 Levels in Sierra Leone
Currently, the Air Quality Index (AQI) in Freetown, the capital of Sierra Leone, is measured at a score of 31. According to the US EPA health standard, this air quality rating is categorized as Good. The current atmosphere in Freetown is influenced by a PM2.5 (fine particulate matter) concentration of 5.6 µg/m³ and PM10 levels recorded at 10.0 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 1.7 µg/m³.
Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Sierra Leone based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Bo, Kenema, Koidou, Makeni and Lunsar. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.
Sierra Leone Air Quality: Major Cities Index
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* Air Quality Index (AQI) data for Sierra Leone is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.
Frequently Asked Questions about Air Quality in Sierra Leone
What is the air quality in Sierra Leone right now?
The current AQI in Freetown (capital of Sierra Leone) is 31 — categorised as Good. Conditions vary across the country — see AQI for all cities for a complete picture.
Which city in Sierra Leone has the worst air quality right now?
Right now, Mile 91 has the highest AQI reading in Sierra Leone at 40 (Good).
Which city in Sierra Leone has the best air quality right now?
Goderich currently has the lowest AQI in Sierra Leone at 27 (Good).
What is the PM2.5 level in Freetown today?
The PM2.5 (fine particulate) concentration in Freetown, the capital of Sierra Leone, is currently 5.6 µg/m³. The WHO 24-hour guideline is 15 µg/m³.
Is the air in Sierra Leone safe to breathe today?
Most cities in Sierra Leone currently report acceptable air-quality levels, though local conditions vary.
What are the cleanest cities in Sierra Leone right now?
Top 5 cities in Sierra Leone with the best (lowest) AQI right now:
- Goderich: AQI 27 — Good
- Kailahun: AQI 28 — Good
- Kenema: AQI 30 — Good
- Segbwema: AQI 30 — Good
- Freetown: AQI 31 — Good
What are the most polluted cities in Sierra Leone right now?
Top 5 cities in Sierra Leone with the worst (highest) AQI right now:
- Mile 91: AQI 40 — Good
- Makeni: AQI 37 — Good
- Magburaka: AQI 37 — Good
- Binkolo: AQI 37 — Good
- Lunsar: AQI 34 — Good
Air Quality Scales & Resources
Wondering what these AQI numbers mean for your health? Our worldwide air quality guide explains every level of the AQI, PM2.5, PM10, ozone, NO2, CO and SO2 scales, with practical health advice for each range.
→ Understanding Air Quality Levels: read the full guide