Added OpenWeatherMap widget.

src/pages/api/widgets/openweathermap.js

@@ -0,0 +1,9 @@
+import cachedFetch from "utils/cached-fetch";
+
+export default async function handler(req, res) {
+  const { lat, lon, apiKey, duration } = req.query;
+
+  const api_url = `https://api.openweathermap.org/data/2.5/weather?lat=${lat}&lon=${lon}&appid=${apiKey}`;
+
+  res.send(await cachedFetch(api_url, duration));
+}