Condition Codes vs. Raw METAR: Why You Should Stop Treating Them as Equivalent
WeatherAPI condition codes are not a direct METAR passthrough. Here’s what the mapping actually does, where it loses fidelity, and when raw data matters.
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Humidity Is Not Humidity: vapor_pressure_deficit and why absolute humidity changes what your app should do
Relative humidity alone misleads. Here’s how to derive VPD and absolute humidity from WeatherAPI data, and when each one actually matters for your use case.
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How to Build a Hyper-Local Heat Stress Index Using WeatherAPI’s Hourly Forecast
Build a real-time heat stress index from WeatherAPI hourly data using WBGT approximation, humidity, and solar load — with working Python code.
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Wind Direction Fields in Weather API Responses: Why wind_dir and wind_degree Aren’t Always Telling You the Same Thing
wind_dir and wind_degree look redundant until they disagree. Here’s what each field actually represents and how to use both without getting burned.
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What feelslike_c Actually Calculates — and When to Stop Trusting It
WeatherAPI’s feelslike_c blends wind chill and heat index — but the thresholds and edge cases matter. Here’s what’s actually being calculated and where it breaks.
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Snow vs. Rain in the API Response: Why precip_type Gets It Wrong Near the Freezing Line
precip_type looks simple until you’re near 0°C. Here’s why the field misleads, when to distrust it, and what to cross-check it against.
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Solar Radiation and Cloud Transmissivity: What WeatherAPI Actually Gives You and How to Use It
WeatherAPI returns solar radiation data — but what does it actually measure, where does it come from, and how should you use it in real applications?
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How to Cache Weather API Responses Without Serving Stale Data at the Wrong Moment
Caching weather API responses saves money and reduces latency — but done wrong, it serves stale forecasts at exactly the wrong time. Here’s how to get it right.
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Precipitation Type vs. Precipitation Amount: Why Your API Response Has Both and Which One to Trust
Snow, sleet, rain — or all three? How WeatherAPI separates precip type from amount, where each breaks down, and which field to actually build logic on.
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UV Index in Weather API Responses: What the Number Actually Represents and Where It Goes Wrong
UV index from a weather API isn’t measured — it’s modeled. Here’s what drives that number, where it breaks down, and how to use it responsibly in your app.