A premium, real-time Air Quality Index (AQI) monitor for cities worldwide. Built with a modern dark UI, interactive Leaflet map, and powered by WAQI and OpenAQ APIs.

✨ Features

• 🗺️ Interactive dark map with glow-effect AQI markers

• 🔍 City search with live autocomplete suggestions

• 📊 Detailed pollutant panel — PM2.5, PM10, O₃, NO₂, CO, SO₂ and more

• 🌤️ Live weather data — Temperature, Humidity, Wind, Pressure

• 📈 Session AQI trend chart with sparkline visualization

• 🔔 Custom AQI alerts with push notification support

• 🕘 Search history with quick re-search

• 🔑 API key management (requires sign-in)

• 👤 Google Sign-In + Email/Password authentication

• 🏭 Multi-source data — WAQI + OpenAQ combined

• 📱 Fully responsive — works on mobile and desktop

• ⚡ Real-time refresh with cooldown timer