🌤️ Climate Explorer
Where is the weather actually good?
Every city rated on the thing that matters day to day: how it feels outside, hour by hour, month by month. Tap any city for its full climate profile — a WeatherSpark-style temperature heatmap, rainfall, and how muggy it really gets. All of it computed from three years of measured weather history, not brochure averages.
Data last updated · Source: Open-Meteo archive API (ERA5), hourly history 2023-2025
How this dashboard works
Every chart on this dashboard is computed from three years of measured hourly weather history (2023–2025) pulled from the Open-Meteo ERA5 archive — the same reanalysis dataset climate scientists use — not from travel-brochure monthly averages. For each city that's tens of thousands of real hourly temperature and humidity readings, averaged into a 12-month × 24-hour grid.
The heatmaps quantize each hour into nine named temperature bands (frigid → freezing → very cold → cold → cool → comfortable → warm → hot → sweltering) with fixed °F boundaries, in the style of WeatherSpark. That's deliberately different from a smooth gradient: bands answer the question you actually have — "will 3pm in April feel comfortable or hot?" — at a glance.
Humidity gets equal billing because temperature alone lies: 88°F in Mexico City and 88°F in Ho Chi Minh City are different planets. The muggy-days count uses dew point, the measure of how sticky the air actually feels.
Where does the weather data come from?
From the ERA5 reanalysis archive via the Open-Meteo historical API — measured hourly temperature, humidity and precipitation for 2023–2025 at each city's coordinates, averaged into hour-by-month grids. No forecasts and no brochure averages are involved.
What do the temperature bands mean?
Each hour is classified into one of nine bands with fixed boundaries at 15/32/45/55/65/75/85/95°F: frigid, freezing, very cold, cold, cool, comfortable, warm, hot, sweltering. "Comfortable" is the 65–75°F band — the yellow regions on every heatmap.
Which cities have the best year-round weather?
High-altitude tropical cities dominate: places like Mexico City, Medellín, Quito, Cuenca and Nairobi sit near the comfortable band nearly all year — the classic "eternal spring" climates. Sort by comfort score to see the current ranking.
What does "muggy" mean here?
Mugginess tracks dew point, not just humidity percentage. When the dew point passes ~68°F the air starts feeling sticky; past 75°F it's oppressive. The muggy-days count tallies how many days a year cross that threshold — the number that separates pleasant tropics from sweaty ones.