diff --git a/act/discovery/get_airnow.py b/act/discovery/get_airnow.py
index fe5fe839b5..b8b8937a8b 100644
--- a/act/discovery/get_airnow.py
+++ b/act/discovery/get_airnow.py
@@ -1,6 +1,13 @@
+
+"""
+Function for getting EPA data from AirNow data portal
+
+"""
+
 import pandas as pd
 import numpy as np
 import xarray as xr
+import warnings
 
 
 def get_airnow_forecast(token, date, zipcode=None, latlon=None, distance=25):
diff --git a/act/discovery/get_cropscape.py b/act/discovery/get_cropscape.py
index 791c478d3b..b8d356c27e 100644
--- a/act/discovery/get_cropscape.py
+++ b/act/discovery/get_cropscape.py
@@ -5,6 +5,7 @@
 
 import datetime
 import requests
+import warnings
 
 try:
     from pyproj import Transformer
diff --git a/act/discovery/get_neon.py b/act/discovery/get_neon.py
index 0e3146a879..91dfb838e4 100644
--- a/act/discovery/get_neon.py
+++ b/act/discovery/get_neon.py
@@ -12,6 +12,7 @@
 import os
 import shutil
 import pandas as pd
+import warnings
 
 
 def get_site_products(site_code, print_to_screen=False):
diff --git a/act/discovery/get_noaapsl.py b/act/discovery/get_noaapsl.py
index 8dfc5041ae..a76280e235 100644
--- a/act/discovery/get_noaapsl.py
+++ b/act/discovery/get_noaapsl.py
@@ -7,6 +7,7 @@
 import pandas as pd
 import numpy as np
 import os
+import warnings
 
 try:
     from urllib.request import urlopen
@@ -64,7 +65,6 @@ def download_noaa_psl_data(site=None, instrument=None, startdate=None, enddate=N
     message = 'API will be changing from act.discovery.get_noaapsl to act.discovery.noaapsl'
     warnings.warn(message, DeprecationWarning, 2)
 
-
     if (site is None) or (instrument is None) or (startdate is None):
         raise ValueError('site, instrument, and startdate need to be set')
 
diff --git a/act/discovery/get_surfrad.py b/act/discovery/get_surfrad.py
index a327f64045..1f08925b6e 100644
--- a/act/discovery/get_surfrad.py
+++ b/act/discovery/get_surfrad.py
@@ -10,6 +10,7 @@
 import os
 import re
 import requests
+import warnings
 
 try:
     from urllib.request import urlopen