diff --git a/internal/adapters/httpapi/server_test.go b/internal/adapters/httpapi/server_test.go
index 9fa80ee..a9c742e 100644
--- a/internal/adapters/httpapi/server_test.go
+++ b/internal/adapters/httpapi/server_test.go
@@ -142,12 +142,21 @@ func TestObservationsCurrentReturnsUSUnits(t *testing.T) {
 	if _, exists := summary["temperatureC"]; exists {
 		t.Fatalf("did not expect metric key temperatureC in US response")
 	}
+	if _, exists := summary["windowMinutes"]; exists {
+		t.Fatalf("did not expect deprecated key windowMinutes in observations summary")
+	}
 
 	conditions := payload["conditions"].([]any)
 	first := conditions[0].(map[string]any)
 	if got := first["temperatureF"].(float64); got != 50.0 {
 		t.Fatalf("expected conditions[0].temperatureF=50.0, got %v", got)
 	}
+	if _, exists := first["providerRawDescription"]; exists {
+		t.Fatalf("did not expect deprecated key providerRawDescription in observations condition")
+	}
+	if _, exists := first["conditionText"]; exists {
+		t.Fatalf("did not expect deprecated key conditionText in observations condition")
+	}
 
 	if obsRepo.summaryWin != constants.ObservationWindow || obsRepo.conditionsWin != constants.ObservationWindow || obsRepo.precipWin != constants.ObservationWindow {
 		t.Fatalf("expected observation window %s to be used", constants.ObservationWindow)
@@ -273,6 +282,9 @@ func TestNullFieldsAreOmittedFromJSON(t *testing.T) {
 	if _, exists := summary["temperatureF"]; exists {
 		t.Fatalf("expected summary.temperatureF to be omitted when nil")
 	}
+	if _, exists := summary["windowMinutes"]; exists {
+		t.Fatalf("expected summary.windowMinutes to be omitted")
+	}
 
 	conditions := obsPayload["conditions"].([]any)
 	firstCond := conditions[0].(map[string]any)
diff --git a/internal/application/observations/service.go b/internal/application/observations/service.go
index 2c9633d..2814370 100644
--- a/internal/application/observations/service.go
+++ b/internal/application/observations/service.go
@@ -28,16 +28,13 @@ type CurrentResponse struct {
 type SummaryResponse struct {
 	TemperatureF         *float64 `json:"temperatureF,omitempty"`
 	ApparentTemperatureF *float64 `json:"apparentTemperatureF,omitempty"`
-	WindowMinutes        int      `json:"windowMinutes"`
 }
 
 type ConditionResponse struct {
-	StationID              *string   `json:"stationId,omitempty"`
-	ObservedAt             time.Time `json:"observedAt"`
-	TemperatureF           *float64  `json:"temperatureF,omitempty"`
-	TextDescription        *string   `json:"textDescription,omitempty"`
-	ProviderRawDescription *string   `json:"providerRawDescription,omitempty"`
-	ConditionText          *string   `json:"conditionText,omitempty"`
+	StationID       *string   `json:"stationId,omitempty"`
+	ObservedAt      time.Time `json:"observedAt"`
+	TemperatureF    *float64  `json:"temperatureF,omitempty"`
+	TextDescription *string   `json:"textDescription,omitempty"`
 }
 
 func (s *Service) GetCurrent(ctx context.Context) (CurrentResponse, error) {
@@ -63,12 +60,10 @@ func (s *Service) GetCurrent(ctx context.Context) (CurrentResponse, error) {
 	conditions := make([]ConditionResponse, 0, len(conditionsMetric))
 	for _, c := range conditionsMetric {
 		conditions = append(conditions, ConditionResponse{
-			StationID:              c.StationID,
-			ObservedAt:             c.ObservedAt,
-			TemperatureF:           s.converter.TemperatureCToOutput(c.TemperatureC),
-			TextDescription:        c.TextDescription,
-			ProviderRawDescription: c.ProviderRawDescription,
-			ConditionText:          c.ConditionText,
+			StationID:       c.StationID,
+			ObservedAt:      c.ObservedAt,
+			TemperatureF:    s.converter.TemperatureCToOutput(c.TemperatureC),
+			TextDescription: c.TextDescription,
 		})
 	}
 
@@ -76,7 +71,6 @@ func (s *Service) GetCurrent(ctx context.Context) (CurrentResponse, error) {
 		Summary: SummaryResponse{
 			TemperatureF:         s.converter.TemperatureCToOutput(summary.TemperatureC),
 			ApparentTemperatureF: s.converter.TemperatureCToOutput(summary.ApparentTemperatureC),
-			WindowMinutes:        int(s.window / time.Minute),
 		},
 		Conditions:          conditions,
 		PrecipitationEvents: precip,