diff --git a/cmd/server/db.go b/cmd/server/db.go
index 8719f2d..71021b5 100644
--- a/cmd/server/db.go
+++ b/cmd/server/db.go
@@ -1781,6 +1781,7 @@ func (db *DB) GetObserverMetrics(observerID, since, until string) ([]MetricsSamp
 type MetricsSummaryRow struct {
 	ObserverID    string     `json:"observer_id"`
 	ObserverName  *string    `json:"observer_name"`
+	IATA          string     `json:"iata,omitempty"`
 	CurrentNF     *float64   `json:"current_noise_floor"`
 	AvgNF         *float64   `json:"avg_noise_floor_24h"`
 	MaxNF         *float64   `json:"max_noise_floor_24h"`
@@ -1800,7 +1801,7 @@ func (db *DB) GetMetricsSummary(since string) ([]MetricsSummaryRow, error) {
 			FROM observer_metrics
 			WHERE timestamp >= ?
 		)
-		SELECT m.observer_id, o.name,
+		SELECT m.observer_id, o.name, COALESCE(o.iata, '') as iata,
 			r.noise_floor as current_nf,
 			AVG(m.noise_floor) as avg_nf,
 			MAX(m.noise_floor) as max_nf,
@@ -1822,7 +1823,7 @@ func (db *DB) GetMetricsSummary(since string) ([]MetricsSummaryRow, error) {
 	var result []MetricsSummaryRow
 	for rows.Next() {
 		var s MetricsSummaryRow
-		if err := rows.Scan(&s.ObserverID, &s.ObserverName, &s.CurrentNF, &s.AvgNF, &s.MaxNF, &s.CurrentBattMv, &s.SampleCount); err != nil {
+		if err := rows.Scan(&s.ObserverID, &s.ObserverName, &s.IATA, &s.CurrentNF, &s.AvgNF, &s.MaxNF, &s.CurrentBattMv, &s.SampleCount); err != nil {
 			return nil, err
 		}
 		result = append(result, s)
diff --git a/cmd/server/routes.go b/cmd/server/routes.go
index 4ef2de8..bcadc15 100644
--- a/cmd/server/routes.go
+++ b/cmd/server/routes.go
@@ -2193,6 +2193,7 @@ func (s *Server) handleMetricsSummary(w http.ResponseWriter, r *http.Request) {
 	if window == "" {
 		window = "24h"
 	}
+	region := r.URL.Query().Get("region")
 
 	// Parse window duration
 	dur, err := parseWindowDuration(window)
@@ -2211,6 +2212,17 @@ func (s *Server) handleMetricsSummary(w http.ResponseWriter, r *http.Request) {
 		summary = []MetricsSummaryRow{}
 	}
 
+	// Filter by region if specified
+	if region != "" {
+		filtered := make([]MetricsSummaryRow, 0)
+		for _, row := range summary {
+			if strings.EqualFold(row.IATA, region) {
+				filtered = append(filtered, row)
+			}
+		}
+		summary = filtered
+	}
+
 	writeJSON(w, map[string]interface{}{
 		"observers": summary,
 	})
diff --git a/public/analytics.js b/public/analytics.js
index 55e2a56..2a29ead 100644
--- a/public/analytics.js
+++ b/public/analytics.js
@@ -2700,7 +2700,7 @@ function destroy() { _analyticsData = {}; _channelData = null; if (_ngState && _
       // Compute window string for summary endpoint
       const windowMap = { '1h':'1h', '3h':'3h', '6h':'6h', '12h':'12h', '24h':'24h', '3d':'3d', '7d':'7d', '30d':'30d' };
       const window = windowMap[_rfHealthState.range] || '24h';
-      const summaryData = await api('/observers/metrics/summary?window=' + window);
+      const summaryData = await api('/observers/metrics/summary?window=' + window + (RegionFilter.regionQueryString() || ''));
       const observers = summaryData.observers || [];
 
       // Filter to observers with sufficient sparkline data (≥2 non-null noise_floor values)