diff --git a/pvlib/iotools/nasa_power.py b/pvlib/iotools/nasa_power.py
index 47dad5f2d3..d06ab50188 100644
--- a/pvlib/iotools/nasa_power.py
+++ b/pvlib/iotools/nasa_power.py
@@ -18,7 +18,15 @@
     'T2M': 'temp_air',
     'WS2M': 'wind_speed_2m',
     'WS10M': 'wind_speed',
-    'ALLSKY_SRF_ALB': 'albedo',
+    'ALLSKY_SFC_LW_DWN': 'longwave_down',
+    'ALLSKY_TOA_SW_DWN': 'ghi_extra',
+    'CLRSKY_DIFF': 'dhi_clear',
+    'PS': 'pressure',
+    'T2MDEW': 'temp_dew',
+    'T2MWET': 'temp_dew',
+    'RH2M': 'relative_humidity',
+    'SRF_ALB': 'albedo',
+    'TQV': 'precipitable_water',
 }
 
 
@@ -150,5 +158,10 @@ def get_nasa_power(latitude, longitude, start, end,
     # Rename according to pvlib convention
     if map_variables:
         df = df.rename(columns=VARIABLE_MAP)
+        # NASA POWER returns PS in kPa; pvlib convention is Pa.
+        # Conversion required for pvlib.atmosphere.pres2alt, alt2pres,
+        # get_absolute_airmass, and other pressure-dependent functions.
+        if 'pressure' in df.columns:
+            df['pressure'] = df['pressure'] * 1000
 
     return df, meta