diff --git a/internal/met/met.go b/internal/met/met.go
index 9482d9b..7c14ea0 100644
--- a/internal/met/met.go
+++ b/internal/met/met.go
@@ -22,13 +22,21 @@ func New(siteName string) (*Met, error) {
 }
 
 func (m *Met) Forecast(lat, lon float64, alt *int) (*LocationForecastResult, error) {
-	url := fmt.Sprintf("https://api.met.no/weatherapi/locationforecast/2.0/complete?lat=%.4f&lon=%.4f&altitude=%d", lat, lon, alt)
+	url := "https://api.met.no/weatherapi/locationforecast/2.0/complete"
 
 	req, err := http.NewRequest("GET", url, nil)
 	if err != nil {
 		return nil, err
 	}
 
+	q := req.URL.Query()
+	q.Add("lat", fmt.Sprintf("%.4f", lat))
+	q.Add("lon", fmt.Sprintf("%.4f", lon))
+	if alt != nil {
+		q.Add("altitude", fmt.Sprintf("%d", alt))
+	}
+	req.URL.RawQuery = q.Encode()
+
 	req.Header.Set("User-Agent", m.siteName)
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
diff --git a/internal/met/met_test.go b/internal/met/met_test.go
index f880186..8caf876 100644
--- a/internal/met/met_test.go
+++ b/internal/met/met_test.go
@@ -25,7 +25,7 @@ func TestForecast(t *testing.T) {
 	f, err := c.Forecast(60.389444, 5.33, nil)
 	assert.NoError(err)
 	coords := f.Geometry.Coordinates
-	assert.Equal([]float64{5.33, 60.3894, 0}, coords)
+	assert.Equal([]float64{5.33, 60.3894, 2}, coords)
 
 	_, err = c.Forecast(10000.0, 10000.33, nil)
 	assert.Error(err)