diff --git a/padel/__main__.py b/padel/__main__.py
index 8ada0b1..725743e 100644
--- a/padel/__main__.py
+++ b/padel/__main__.py
@@ -3,6 +3,8 @@ import argparse
 from configparser import ConfigParser
 from pathlib import Path
 from weather import WeatherAPI
+import asyncio as aio
+import time
 
 
 def existing_path(path_str):
@@ -14,7 +16,7 @@ def existing_path(path_str):
     return path
 
 
-def main():
+async def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("-c", "--config-file", help="Path to config file.",
                         default="padel.ini", type=existing_path)
@@ -30,17 +32,18 @@ def main():
     # TODO check if config file can be read
     config.read(args.config_file)
 
-    club_address = get_club_address(args.club_id)
+    club_address = await get_club_address(args.club_id)
 
     if club_address is None:
         print("Couldn't get club address.")
         return
 
     weather_api = WeatherAPI(config["DEFAULT"]["weather_api_key"])
-    weather_forecasts = weather_api.get_hourly_conditions(club_address,
-                                                          days=args.days)
-    timeslots = get_time_slots(args.club_id, days=args.days)
+    weather_forecasts, timeslots = await aio.gather(
+        weather_api.get_hourly_conditions(club_address, days=args.days),
+        get_time_slots(args.club_id, days=args.days)
+    )
 
 
 if __name__ == "__main__":
-    main()
+    aio.run(main())
diff --git a/padel/combo.py b/padel/combo.py
new file mode 100644
index 0000000..e69de29
diff --git a/padel/tennis.py b/padel/tennis.py
index 441bd64..14462ae 100644
--- a/padel/tennis.py
+++ b/padel/tennis.py
@@ -1,6 +1,7 @@
 import requests
 from bs4 import BeautifulSoup
 from datetime import date, time, timedelta, datetime
+import asyncio as aio
 
 
 BASE_URL = "https://www.tennisvlaanderen.be/terreinreservatie-dagplanning"
@@ -61,23 +62,22 @@ def extract_calendar(soup: BeautifulSoup, reservation_date):
     return [(col, status, datetime.combine(reservation_date, start), duration) for col, status, start, duration in timeslots]
 
 
-def get_time_slots(club_id: int, days=1):
+async def get_time_slots(club_id: int, days=1):
     dates = [date.today() + timedelta(days=i) for i in range(days)]
-    params = {"clubId": club_id}
 
-    output = []
-
-    for planning_date in dates:
-        params["planningDay"] = planning_date.strftime("%d-%m-%Y")
-
-        r = requests.get(BASE_URL, params=params)
+    async def get_calendar(date_obj):
+        r = requests.get(BASE_URL, params={
+            "clubId": club_id,
+            "planningDay": date_obj.strftime("%d-%m-%Y")
+        })
         soup = BeautifulSoup(r.content, "html.parser")
 
-        output.extend(extract_calendar(soup, planning_date))
+        return extract_calendar(soup, date_obj)
 
-    return output
+    return sum(await aio.gather(*[get_calendar(date_obj) for date_obj in
+                                  dates]), [])
 
-def get_club_address(club_id: int):
+async def get_club_address(club_id: int):
     r = requests.get(BASE_URL, params={
         "clubId": club_id,
         "tab": "club",
diff --git a/padel/weather.py b/padel/weather.py
index fe4f607..18692c9 100644
--- a/padel/weather.py
+++ b/padel/weather.py
@@ -11,7 +11,7 @@ class WeatherAPI:
         params["key"] = self._api_key
         return requests.get(f"{self.BASE_URL}{endpoint}", params=params)
 
-    def get_hourly_conditions(self, query, days=1):
+    async def get_hourly_conditions(self, query, days=1):
         r = self._get("/forecast.json", {
             "q": query,
             "days": days,