MagicMirrorOrg/MagicMirror · error · Error

Latitude and longitude are required

Error message

Latitude and longitude are required

What it means

#validateConfig requires numeric lat and lon for the WeatherAPI.com query URL. It throws this Error when either value is missing or not a finite number (Number.isFinite check rejects strings, undefined, NaN, Infinity).

Source

Thrown at defaultmodules/weather/providers/weatherapi.js:66

	}

	#validateConfig () {
		this.config.type = `${this.config.type ?? ""}`.trim().toLowerCase();

		if (this.config.type === "forecast") {
			this.config.type = "daily";
		}

		if (!["hourly", "daily", "current"].includes(this.config.type)) {
			throw new Error(`Unknown weather type: ${this.config.type}`);
		}

		if (!this.config.apiKey || `${this.config.apiKey}`.trim() === "") {
			throw new Error("apiKey is required");
		}

		if (!Number.isFinite(this.config.lat) || !Number.isFinite(this.config.lon)) {
			throw new Error("Latitude and longitude are required");
		}
	}

	#initializeFetcher () {
		const url = this.#getUrl();

		this.fetcher = new HTTPFetcher(url, {
			reloadInterval: this.config.updateInterval,
			headers: { "Cache-Control": "no-cache" },
			logContext: "weatherprovider.weatherapi"
		});

		this.fetcher.on("response", async (response) => {
			try {
				const data = await response.json();
				this.#handleResponse(data);
			} catch (error) {
				Log.error("[weatherapi] Failed to parse JSON:", error);

View on GitHub (pinned to 4b4a59534f)

Solutions

1. Add numeric lat and lon to the module config, e.g. lat: 52.52, lon: 13.405.
2. Remove quotes so values are numbers, not strings.
3. If coordinates come from another module, ensure they are Number() coerced before provider init.
4. Verify lat/lon are in decimal degrees (not degrees-minutes-seconds).

Example fix

// before
config: { weatherProvider: "weatherapi", apiKey: "k", lat: "52.52", lon: "13.40" }
// after
config: { weatherProvider: "weatherapi", apiKey: "k", lat: 52.52, lon: 13.40 }

const lat = Number(config.lat), lon = Number(config.lon);
if (!Number.isFinite(lat) || !Number.isFinite(lon) || Math.abs(lat) > 90 || Math.abs(lon) > 180) {
  throw new Error(`weatherapi: lat/lon must be finite decimal degrees, got ${config.lat}, ${config.lon}`);
}

function hasValidCoords(config) {
  return Number.isFinite(config.lat) && Number.isFinite(config.lon);
}

When it happens

Trigger: Module config lacks lat/lon, supplies them as strings (lat: "52.5"), sets them to null/undefined, or a location-lookup feature failed to populate them before initialize.

Common situations: Using location name instead of coordinates (some providers accept city names, weatherapi provider in MagicMirror does not), copy-pasting coordinates as strings from JSON, lat/lon defined only in a different config section.

Understand the failure class

Background: "Invalid value" and "allowed values are" config errors: what your library rejected and how to fix it — this error's family across 41 libraries.

Related errors

• Latitude and longitude are required
• Unknown weather type: ${this.config.type}
• siteCode and provCode are required
• apiKey is required
• [weather] Deprecation warning: Your are using the deprecated

AI-assisted analysis of MagicMirrorOrg/MagicMirror@4b4a59534f (2026-08-31). Data as JSON: /api/errors/ed4e80f5da5ce483. Report an issue: GitHub.