Currency Meter KNN is a forex indicator designed to provide a clear view of currency strength and flow for the eight major currencies: USD, EUR, GBP, JPY, AUD, CAD, CHF, and NZD. It aggregates data across all currency pairs to compute a normalized strength meter for each currency. The indicator uses multiple rolling window features, including percentage returns and proprietary metrics, to calculate an averaged "currency pressure" value.

To address market non-stationarity, it applies a dynamic threshold based on recent signal distributions to identify extreme currency strength or weakness. A k-Nearest Neighbors (kNN) machine learning classifier then estimates the probability of mean reversion from these extremes. When the probability exceeds a set confidence threshold, the indicator generates directional alerts (BUY or SELL) for specific currency pairs.

Key features include multi-pair aggregation, a dynamic extreme threshold, an interpretable kNN probability layer, and persistent on-chart arrows indicating recent signals. The approach emphasizes transparency and reaction to statistically stretched currency conditions rather than predictive forecasting. This tool supports traders focusing on forex markets and strategies such as scalping and smart money concepts.