Xcalibur.Weather.Services 1.0.3

Xcalibur.Weather.Services

A comprehensive .NET library providing HTTP client services for weather-related APIs. Seamless integration with multiple weather data providers including Open-Meteo, Geocodio, IpGeolocation.io, Google Pollen, SunriseSunset.io, and OpenStreetMap for weather forecasting, geocoding, air quality monitoring, pollen insights, and astronomical data.

Created by: Joshua Arzt | Company: Xcalibur Systems, LLC.

Latest Updates

• Package version: 1.0.2
• Models package dependency: 1.0.3
• Added SunriseSunsetService for sunrise and sunset data
• Added OpenStreetMapService for Nominatim geocoding
• Added GooglePollenService for daily pollen forecast data

📋 Table of Contents

• Features
• Installation
• Services
  • OpenMeteoService
  • GeocodioService
  • IpGeoService
  • GooglePollenService
  • SunriseSunsetService
  • OpenStreetMapService
• Usage
  • Basic Setup
  • OpenMeteo Examples
  • Geocodio Examples
  • IpGeo Examples
  • GooglePollen Examples
  • SunriseSunset Examples
  • OpenStreetMap Examples
• API Endpoints
• Dependencies
• Testing
• API Key Management
• Best Practices
• Advanced Configuration
• Project Structure
• License
• Related Projects

✨ Features

• Multiple Weather Providers: Integrated support for Open-Meteo, Geocodio, IpGeolocation.io, Google Pollen, SunriseSunset.io, and OpenStreetMap APIs
• Comprehensive Weather Data: Access current weather, forecasts, air quality, pollen forecasts, geocoding, and astronomical data
• Modern .NET 10: Built with the latest .NET features and best practices
• Async/Await: Full asynchronous API support with cancellation tokens
• Logging Support: Built-in logging using Microsoft.Extensions.Logging
• AOT-Ready: Source-generated JSON contexts for Native AOT compilation support
• Error Handling: Robust error handling with detailed logging
• Streaming Deserialization: Efficient memory usage with streaming JSON deserialization
• Type-Safe: Strongly-typed responses using Xcalibur.Weather.Models
• Flexible Provider Coverage: Includes both API key and no-key providers for geocoding, pollen, and astronomy data

📦 Installation

Install via NuGet Package Manager:

dotnet add package Xcalibur.Weather.Services

Or via Package Manager Console:

Install-Package Xcalibur.Weather.Services

🌦️ Services

OpenMeteoService

The OpenMeteoService provides access to Open-Meteo weather APIs, offering comprehensive weather data without requiring an API key.

Key Features:

• Current weather conditions
• Current air quality index (AQI)
• 48-hour hourly forecasts
• Multi-day daily forecasts
• Historical weather data (yesterday)

Supported Data Points:

• Temperature (current, apparent, min/max)
• Humidity and dew point
• Precipitation (rain, showers, snowfall)
• Wind (speed, direction, gusts)
• Atmospheric pressure
• Cloud cover and visibility
• Weather codes
• Air quality metrics (PM2.5, PM10, CO, NO2, SO2, O3, etc.)
• Pollen levels (alder, birch, grass, mugwort, olive, ragweed)
• UV index
• Sunrise/sunset and daylight duration

GeocodioService

The GeocodioService provides geocoding capabilities to convert addresses into geographic coordinates.

Key Features:

• Forward geocoding (address to coordinates)
• Country-specific searches
• API key validation
• Detailed location results with accuracy information

IpGeoService

The IpGeoService provides astronomical data for specific geographic locations.

Key Features:

• Sunrise and sunset times
• Moonrise and moonset times
• Moon phase information
• API key validation

GooglePollenService

The GooglePollenService provides daily pollen forecast data from the Google Pollen API and requires an API key.

Key Features:

• Daily pollen forecast lookup by coordinates
• Pollen type insights for grass, tree, and weed categories
• Plant-specific pollen details and descriptions
• Health recommendations
• API key validation

SunriseSunsetService

The SunriseSunsetService provides sunrise and sunset data from SunriseSunset.io without requiring an API key.

Key Features:

• Sunrise and sunset times
• Solar noon and day length data
• No API key required
• Lightweight astronomy lookups by coordinates

OpenStreetMapService

The OpenStreetMapService provides geocoding through OpenStreetMap Nominatim.

Key Features:

• Forward geocoding (address to coordinates)
• Address details in results
• Country-filtered searches
• No API key required
• Built-in default User-Agent support for Nominatim requests

🚀 Usage

Basic Setup

using Microsoft.Extensions.Logging.Abstractions;
using Xcalibur.Weather.Services.WeatherProvider.OpenMeteo;
using Xcalibur.Weather.Services.WeatherProvider.Geocodio;
using Xcalibur.Weather.Services.WeatherProvider.IpGeo;
using Xcalibur.Weather.Services.WeatherProvider.GooglePollen;
using Xcalibur.Weather.Services.WeatherProvider.SunriseSunset;
using Xcalibur.Weather.Services.WeatherProvider.OpenStreetMap;

var httpClient = new HttpClient();
var loggerFactory = LoggerFactory.Create(builder => builder.AddConsole());
var logger = loggerFactory.CreateLogger<OpenMeteoService>();

var openMeteoService = new OpenMeteoService(httpClient, logger);
var geocodioService = new GeocodioService(httpClient, "YOUR_GEOCODIO_API_KEY", loggerFactory.CreateLogger<GeocodioService>());
var ipGeoService = new IpGeoService(httpClient, "YOUR_IPGEO_API_KEY", loggerFactory.CreateLogger<IpGeoService>());
var googlePollenService = new GooglePollenService(httpClient, "YOUR_GOOGLE_POLLEN_API_KEY", loggerFactory.CreateLogger<GooglePollenService>());
var sunriseSunsetService = new SunriseSunsetService(httpClient, loggerFactory.CreateLogger<SunriseSunsetService>());
var openStreetMapService = new OpenStreetMapService(httpClient, loggerFactory.CreateLogger<OpenStreetMapService>());

OpenMeteo Examples

Get Current Weather

var currentWeather = await openMeteoService.GetCurrentWeatherAsync("40.7128", "-74.0060");

if (currentWeather?.Current != null)
{
    Console.WriteLine($"Temperature: {currentWeather.Current.Temperature}°C");
    Console.WriteLine($"Humidity: {currentWeather.Current.RelativeHumidity}%");
    Console.WriteLine($"Wind Speed: {currentWeather.Current.WindSpeed} km/h");
}

Get Current Air Quality

var airQuality = await openMeteoService.GetCurrentAirQualityAsync("40.7128", "-74.0060");

if (airQuality?.Current != null)
{
    Console.WriteLine($"US AQI: {airQuality.Current.UsAqi}");
    Console.WriteLine($"PM2.5: {airQuality.Current.Pm2_5}");
    Console.WriteLine($"PM10: {airQuality.Current.Pm10}");
}

Get Hourly Forecast

var hourlyForecast = await openMeteoService.GetHourlyForecastAsync("40.7128", "-74.0060");

if (hourlyForecast?.Hourly != null)
{
    for (int i = 0; i < hourlyForecast.Hourly.Time.Length; i++)
    {
        Console.WriteLine($"{hourlyForecast.Hourly.Time[i]}: {hourlyForecast.Hourly.Temperature2m[i]}°C");
    }
}

Get Daily Forecast

// Get 7-day forecast
var dailyForecast = await openMeteoService.GetDailyForecastAsync("40.7128", "-74.0060", 7);

if (dailyForecast?.Daily != null)
{
    for (int i = 0; i < dailyForecast.Daily.Time.Length; i++)
    {
        Console.WriteLine($"{dailyForecast.Daily.Time[i]}:");
        Console.WriteLine($"  High: {dailyForecast.Daily.Temperature2mMax[i]}°C");
        Console.WriteLine($"  Low: {dailyForecast.Daily.Temperature2mMin[i]}°C");
        Console.WriteLine($"  Precipitation: {dailyForecast.Daily.PrecipitationSum[i]}mm");
    }
}

Get Yesterday's Weather

var yesterday = DateTime.UtcNow.AddDays(-1);
var historicalWeather = await openMeteoService.GetYesterdayForecastAsync(
    "40.7128", 
    "-74.0060", 
    yesterday.ToString("yyyy-MM-dd"));

if (historicalWeather?.Hourly != null)
{
    Console.WriteLine($"Yesterday's temperatures:");
    for (int i = 0; i < historicalWeather.Hourly.Time.Length; i++)
    {
        Console.WriteLine($"{historicalWeather.Hourly.Time[i]}: {historicalWeather.Hourly.Temperature2m[i]}°C");
    }
}

Geocodio Examples

Setup with API Key

var geocodioService = new GeocodioService(
    httpClient, 
    "YOUR_GEOCODIO_API_KEY", 
    loggerFactory.CreateLogger<GeocodioService>());

Test API Key

var isValid = await geocodioService.TestApiKey();
Console.WriteLine($"API Key is {(isValid ? "valid" : "invalid")}");

Geocode an Address

var locations = await geocodioService.GetLocationsAsync(
    "1600 Pennsylvania Avenue NW, Washington, DC", 
    "US");

if (locations?.Results != null)
{
    foreach (var result in locations.Results)
    {
        Console.WriteLine($"Location: {result.FormattedAddress}");
        Console.WriteLine($"Coordinates: {result.Location.Latitude}, {result.Location.Longitude}");
        Console.WriteLine($"Accuracy: {result.Accuracy}");
    }
}

IpGeo Examples

Setup with API Key

var ipGeoService = new IpGeoService(
    httpClient, 
    "YOUR_IPGEO_API_KEY", 
    loggerFactory.CreateLogger<IpGeoService>());

Test API Key

var isValid = await ipGeoService.TestApiKey();
Console.WriteLine($"API Key is {(isValid ? "valid" : "invalid")}");

Get Astronomical Data

var sunMoonData = await ipGeoService.GetSunMoonDataAsync("40.7128", "-74.0060");

if (sunMoonData != null)
{
    Console.WriteLine($"Sunrise: {sunMoonData.Astronomy?.Sunrise}");
    Console.WriteLine($"Sunset: {sunMoonData.Astronomy?.Sunset}");
    Console.WriteLine($"Moonrise: {sunMoonData.Astronomy?.Moonrise}");
    Console.WriteLine($"Moonset: {sunMoonData.Astronomy?.Moonset}");
    Console.WriteLine($"Moon Phase: {sunMoonData.Astronomy?.MoonPhase}");
}

GooglePollen Examples

Setup with API Key

var googlePollenService = new GooglePollenService(
    httpClient,
    "YOUR_GOOGLE_POLLEN_API_KEY",
    loggerFactory.CreateLogger<GooglePollenService>());

Test API Key

var isValid = await googlePollenService.TestApiKey();
Console.WriteLine($"API Key is {(isValid ? "valid" : "invalid")}");

Get Pollen Forecast

var pollenForecast = await googlePollenService.GetPollenForecastAsync("39.4300996", "-77.804161");

if (pollenForecast?.DailyInfo != null && pollenForecast.DailyInfo.Count > 0)
{
    var daily = pollenForecast.DailyInfo[0];
    Console.WriteLine($"Region: {pollenForecast.RegionCode}");

    if (daily.PollenTypeInfo != null)
    {
        foreach (var pollenType in daily.PollenTypeInfo)
        {
            Console.WriteLine($"{pollenType.DisplayName}: {pollenType.IndexInfo?.Category} ({pollenType.IndexInfo?.Value})");
        }
    }
}

SunriseSunset Examples

Setup

var sunriseSunsetService = new SunriseSunsetService(
    httpClient,
    loggerFactory.CreateLogger<SunriseSunsetService>());

Get Sunrise and Sunset Data

var astronomy = await sunriseSunsetService.GetSunriseSunsetAsync("40.7128", "-74.0060");

if (astronomy?.Results != null)
{
    Console.WriteLine($"Sunrise: {astronomy.Results.Sunrise}");
    Console.WriteLine($"Sunset: {astronomy.Results.Sunset}");
    Console.WriteLine($"Day Length: {astronomy.Results.DayLength}");
    Console.WriteLine($"Solar Noon: {astronomy.Results.SolarNoon}");
}

OpenStreetMap Examples

Setup

var openStreetMapService = new OpenStreetMapService(
    httpClient,
    loggerFactory.CreateLogger<OpenStreetMapService>());

Search for Locations

var locations = await openStreetMapService.GetLocationsAsync(
    "1600 Pennsylvania Avenue NW, Washington, DC",
    "us");

if (locations != null)
{
    foreach (var location in locations)
    {
        Console.WriteLine($"Display Name: {location.DisplayName}");
        Console.WriteLine($"Coordinates: {location.Lat}, {location.Lon}");
    }
}

🌐 API Endpoints

Open-Meteo

• Current Weather: https://api.open-meteo.com/v1/forecast
• Air Quality: https://air-quality-api.open-meteo.com/v1/air-quality
• Historical: https://archive-api.open-meteo.com/v1/archive
• API Key: Not required (free and open)
• Documentation: Open-Meteo API Docs

Geocodio

• Base URL: https://api.geocod.io/v1.9/geocode
• API Key: Required
• Sign Up: Geocodio
• Documentation: Geocodio API Docs

IpGeolocation.io

• Base URL: https://api.ipgeolocation.io/v2/astronomy
• API Key: Required
• Sign Up: IpGeolocation.io
• Documentation: IpGeo API Docs

Google Pollen API

• Base URL: https://pollen.googleapis.com/v1/forecast:lookup
• API Key: Required
• Documentation: Google Pollen API Docs

SunriseSunset.io

• Base URL: https://api.sunrisesunset.io/json
• API Key: Not required
• Documentation: SunriseSunset.io Docs

OpenStreetMap Nominatim

• Base URL: https://nominatim.openstreetmap.org/search
• API Key: Not required
• Requirement: A descriptive User-Agent header is required
• Documentation: Nominatim Search API

📚 Dependencies

• .NET 10.0: Target framework
• Microsoft.Extensions.Hosting (v10.0.7): For hosting, logging, and dependency injection abstractions
• Xcalibur.Weather.Models (v1.0.3): Shared models and DTOs for weather data

🧪 Testing

The project includes comprehensive unit tests in the Xcalibur.Weather.Services.Tests project.

Running Tests

dotnet test

Current Test Coverage

• OpenMeteoServiceTests: Tests for Open-Meteo API operations
• GeocodioServiceTests: Tests for geocoding functionality and API key validation
• IpGeoServiceTests: Tests for astronomical data retrieval
• GooglePollenServiceTests: Tests for pollen forecast retrieval, API key validation, and request URL generation
• SunriseSunsetServiceTests: Tests for sunrise and sunset data retrieval
• OpenStreetMapServiceTests: Tests for geocoding and Nominatim request behavior

🏗️ Project Structure

Xcalibur.Weather.Services/
├── WeatherProvider/
│   ├── OpenMeteo/
│   │   └── OpenMeteoService.cs
│   ├── Geocodio/
│   │   └── GeocodioService.cs
│   ├── IpGeo/
│   │   └── IpGeoService.cs
│   ├── GooglePollen/
│   │   └── GooglePollenService.cs
│   ├── SunriseSunset/
│   │   └── SunriseSunsetService.cs
│   └── OpenStreetMap/
│       └── OpenStreetMapService.cs
├── Xcalibur.Weather.Services.csproj
│
Xcalibur.Weather.Services.Tests/
├── WeatherProvider/
│   ├── OpenMeteoServiceTests.cs
│   ├── GeocodioServiceTests.cs
│   ├── IpGeoServiceTests.cs
│   ├── GooglePollenServiceTests.cs
│   ├── SunriseSunsetServiceTests.cs
│   └── OpenStreetMapServiceTests.cs
└── Xcalibur.Weather.Services.Tests.csproj

🔧 Advanced Configuration

Custom HttpClient Configuration

var httpClient = new HttpClient
{
    Timeout = TimeSpan.FromSeconds(30)
};

httpClient.DefaultRequestHeaders.Add("User-Agent", "YourApp/1.0");

var service = new OpenMeteoService(httpClient, logger);

Cancellation Token Support

All async methods support cancellation tokens for graceful shutdown:

var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));

try
{
    var weather = await openMeteoService.GetCurrentWeatherAsync(
        "40.7128", 
        "-74.0060", 
        cts.Token);
}
catch (OperationCanceledException)
{
    Console.WriteLine("Request was cancelled");
}

📝 Best Practices

1. Reuse HttpClient: Create a single HttpClient instance and reuse it across service instances
2. Use Dependency Injection: Register services in your DI container for better testability
3. Handle Nulls: All service methods return nullable types; always check for null responses
4. Monitor Logs: Enable debug logging to troubleshoot API issues
5. Respect Provider Policies: Be mindful of rate limits and usage policies for Geocodio, IpGeo, Google Pollen, SunriseSunset.io, and OpenStreetMap Nominatim
6. Secure API Keys: Store API keys in secure configuration (Azure Key Vault, user secrets, etc.)
7. Set a User-Agent When Needed: OpenStreetMap Nominatim requires a meaningful User-Agent; the service sets a default if one is not already present

🔐 API Key Management

User Secrets (Development)

dotnet user-secrets init
dotnet user-secrets set "Geocodio:ApiKey" "YOUR_API_KEY"
dotnet user-secrets set "IpGeo:ApiKey" "YOUR_API_KEY"
dotnet user-secrets set "GooglePollen:ApiKey" "YOUR_API_KEY"

appsettings.json

{
  "Geocodio": {
    "ApiKey": "YOUR_GEOCODIO_API_KEY"
  },
  "IpGeo": {
    "ApiKey": "YOUR_IPGEO_API_KEY"
  },
  "GooglePollen": {
    "ApiKey": "YOUR_GOOGLE_POLLEN_API_KEY"
  }
}

Environment Variables

set GEOCODIO_API_KEY=your_key_here
set IPGEO_API_KEY=your_key_here
set GOOGLEPOLLEN_API_KEY=your_key_here

📄 License

This project is licensed under the Apache License 2.0. See the LICENSE-2.0.txt file for details.

Copyright © 2006 - 2026, Xcalibur Systems, LLC - All Rights Reserved

🔗 Related Projects

• Xcalibur.Weather.Models - Core weather data models and DTOs (GitHub)
• Xcalibur.Weather.Helpers - Utility functions and conversion helpers (GitHub)

Part of the Xcalibur Weather ecosystem for comprehensive weather data integration.

Author

Joshua Arzt
Xcalibur Systems, LLC

Note: This library requires API keys for Geocodio and IpGeolocation.io services. Open-Meteo, SunriseSunset.io, and OpenStreetMap Nominatim do not require API keys.