MatsvdZ/air-quality-in-ghana

A webportal for scientists and researchers that want to know more about the air quality in Ghana # air quality in Ghana A web-based platform that visualizes nitrogen dioxide (NO₂) air quality measurements in Kumasi, Ghana. The portal is designed to support public awareness and scientific research, with a strong focus on mobile-first design, low data usage, and data transparency. 🔗 Live site: air-quality-in-ghana-produc… ## Project overview This platform presents monthly NO₂ measurements collected using low-cost diffusion tubes at street level. Users can explore the data through an interactive map and table view, download datasets, and compare locations over time. In addition, a protected admin environment allows researchers to manage locations and measurements without modifying the codebase. ## Key features ### User • Interactive map with measurement points (Leaflet) • Time slider to explore historical data (monthly) • Table view with filtering (period, value range, search) • Download options (JSON / Excel) • Ranking of best-performing locations • Mobile-first and low-bandwidth friendly ### Admin • Secure login • Add, edit and delete locations • Add, edit and delete measurements • Search, filter and paginate measurements • Designed for researchers and lab staff ## Tech stack ### Frontend • EJS – server-side templating • Vanilla JavaScript – client-side logic • CSS (mobile-first) – custom styling, no UI framework • Leaflet.js – interactive map using OpenStreetMap tiles ### Backend • Node.js • Express.js – web server & routing • MongoDB – database • Mongoose – object data modeling (ODM) ### Data & utilities • ExcelJS – importing and exporting Excel files • dotenv – environment variable management • express-session – authentication sessions • connect-mongo – session storage in MongoDB ## Installation & setup 1. Clone the repository `git clone github.com` 2. Install dependencies `npm install` 3. Environment variables Create a .env file in the project root: ``` PORT=3000 MONGODB_URI=mo …