CLeNECity-Level NO₂ Exposure Intelligence

Satellite-derived exposure intelligence for West African cities, built to support research, policy, and public-health decision making.

Beta 1.02019-202527 cities

Platform

  • Home
  • Insights
  • About
  • Contact

Explore Data

  • Interactive Map
  • Trends
  • Cities
  • Health

Data Basis

Sentinel-5P TROPOMI NO₂ columns, NASA Gridded Population 2020, and supporting boundary layers.

NO₂ columns are not direct surface concentrations, clinical outcomes, or regulatory certification.

atmostechlab@knust.edu.gh

Copyright 2026 AtmosTech Lab, KNUST. All rights reserved.

West AfricaKNUST
Beta 1.0

CLeNE is currently in beta. Your feedback helps us improve city-level NO₂ exposure intelligence.

Submit Feedback
CLeNE City-Level NO2 Exposure Intelligence
HomeInsights
About
Contact
Loading map explorer
West Africa Avg NPWEI Index74High
Highest NO₂ CountryNigeria↗ 100/100
Highest Urban HotspotLagos, Nigeria↗ 100/100
Pop in High-Column Zones224.7M61.5% of urban pop
NPWEI Index Range0-100Annual Mean

NO₂ Exposure by City

Annual Average · 2019-2025

CityCountryNPWEI Index
NASA Gridded Population 2020 · ≥50 ppl/km² urban pixels