Add US Weather API to Weather

README.md

@@ -1278,6 +1278,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Storm Glass](https://stormglass.io/) | Global marine weather from multiple sources | `apiKey` | Yes | Yes |
 | [Tomorrow](https://docs.tomorrow.io) | Weather API Powered by Proprietary Technology | `apiKey` | Yes | Unknown |
 | [Troposphere](https://www.troposphere.io/developer) | Global weather and climate data | `apiKey` | Yes | Yes |
+| [US Weather](https://www.weather.gov/documentation/services-web-api) | US National Weather Service | No | Yes | Yes |
 | [Visual Crossing](https://www.visualcrossing.com/weather-api) | Global historical and weather forecast data | `apiKey` | Yes | Yes |
 | [weather-api](https://github.com/robertoduessmann/weather-api) | A RESTful free API to check the weather | No | Yes | No |
 | [Weatherbit](https://www.weatherbit.io/api) | Weather | `apiKey` | Yes | Unknown |