Create app.py

app.py

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+import streamlit as st
+from streamlit_folium import st_folium
+import folium
+import requests
+from datetime import datetime
+import cdsapi  # To connect with ECMWF's Copernicus Data Service
+
+# Streamlit App
+st.title("Weather Explorer 🌍☀️")
+
+st.markdown("Search and click a location on the map to get current and historical temperature data.")
+
+# Map setup
+m = folium.Map(location=[20, 0], zoom_start=2)
+map_data = st_folium(m, width=700, height=500)
+
+# Check if user clicked a location
+if map_data and map_data.get("last_clicked"):
+    lat = map_data["last_clicked"]["lat"]
+    lon = map_data["last_clicked"]["lng"]
+    st.success(f"You selected: Latitude {lat:.4f}, Longitude {lon:.4f}")
+    
+    # Get today's date
+    today = datetime.utcnow().date()
+    
+    # --------- Replace below with actual data fetching ----------
+    st.write("Fetching current and historical weather data...")
+
+    # Example placeholder (you'll replace this with real ECMWF data):
+    current_temp = 25  # Placeholder: current temperature
+    historical_min_temp = 15  # Placeholder: historical minimum
+    historical_max_temp = 35  # Placeholder: historical maximum
+
+    st.metric("Current Temperature (°C)", f"{current_temp}°C")
+    st.metric("Historical Min (°C) on this day", f"{historical_min_temp}°C")
+    st.metric("Historical Max (°C) on this day", f"{historical_max_temp}°C")