diff --git a/README.md b/README.md
index 85b9aaa..711c9a3 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ sondehub.Stream(sondes=["serial number"], on_message=callback)
 ```
 If no `sondes` list is provided then all radiosondes will be streamed.
 
-On message callback will contain a python dictonary using the [Universal Sonde Telemetry Format](https://github.com/projecthorus/radiosonde_auto_rx/wiki/Suggested-Universal-Sonde-Telemetry-Format)
+On message callback will contain a python dictonary using the [Universal Sonde Telemetry Format](https://github.com/projecthorus/radiosonde_auto_rx/wiki/SondeHub-DB-Universal-Telemetry-Format)
 
 
 ```
@@ -66,4 +66,16 @@ sondehub | jq .
 }
 ....
 
+```
+
+
+Open Data Access
+==
+
+A basic interface to the Open Data is a available using `sondehub.download(serial=None, datetime_prefix=None)`
+
+```
+import sondehub
+frames = sondehub.download(datetime_prefix="2018-10-01")
+frames = sondehub.download(serial="serial")
 ```
\ No newline at end of file
diff --git a/example.py b/example.py
index 6a3ae1b..2ebfe6d 100644
--- a/example.py
+++ b/example.py
@@ -1,11 +1,16 @@
 import sondehub
+from multiprocessing import Queue
+# def on_message(message):
+#     print(f"{message['serial']} - {message['alt']}")
 
+# test = sondehub.Stream(on_message=on_message)
+# while 1:
+#     pass
 
-def on_message(message):
-    print(message)
+print(sondehub.download(serial="S1120364"))
+#print(sondehub.download(datetime_prefix="2021-02-04T02:19"))
+# tasks_to_accomplish = Queue()
+# blah = Queue()
+# tasks_to_accomplish.put(("sondehub-open-data","serial/S1120364/2020-10-18T01:10:12.152254Z-5fb87ccb-7a0e-4975-b39f-593e19bc2bcd.json"))
 
-
-#test = sondehub.Stream(sondes=["R3320848"], on_message=on_message)
-test = sondehub.Stream(on_message=on_message)
-while 1:
-    pass
+# print(sondehub.parallel_download(tasks_to_accomplish,blah))
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
index 3cf58a4..3f81cdf 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,3 +1,46 @@
+[[package]]
+name = "boto3"
+version = "1.14.44"
+description = "The AWS SDK for Python"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+botocore = ">=1.17.44,<1.18.0"
+jmespath = ">=0.7.1,<1.0.0"
+s3transfer = ">=0.3.0,<0.4.0"
+
+[[package]]
+name = "botocore"
+version = "1.17.44"
+description = "Low-level, data-driven core of boto 3."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+docutils = ">=0.10,<0.16"
+jmespath = ">=0.7.1,<1.0.0"
+python-dateutil = ">=2.1,<3.0.0"
+urllib3 = {version = ">=1.20,<1.26", markers = "python_version != \"3.4\""}
+
+[[package]]
+name = "docutils"
+version = "0.15.2"
+description = "Docutils -- Python Documentation Utilities"
+category = "main"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "jmespath"
+version = "0.10.0"
+description = "JSON Matching Expressions"
+category = "main"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
 [[package]]
 name = "paho-mqtt"
 version = "1.5.1"
@@ -9,12 +52,88 @@ python-versions = "*"
 [package.extras]
 proxy = ["pysocks"]
 
+[[package]]
+name = "python-dateutil"
+version = "2.8.1"
+description = "Extensions to the standard Python datetime module"
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+
+[package.dependencies]
+six = ">=1.5"
+
+[[package]]
+name = "s3transfer"
+version = "0.3.4"
+description = "An Amazon S3 Transfer Manager"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+botocore = ">=1.12.36,<2.0a.0"
+
+[[package]]
+name = "six"
+version = "1.15.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "urllib3"
+version = "1.25.11"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+
+[package.extras]
+brotli = ["brotlipy (>=0.6.0)"]
+secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
+
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.9"
-content-hash = "76d5dfeb617b3f477c15007458ec4f5fad94e4d9ab19f2c8080bb7581685bc1f"
+python-versions = "^3.6"
+content-hash = "5eea1d9524a6003f57f557fe7d9d72b25e416ed1bcdbf691db48a0dd01979cbe"
 
 [metadata.files]
+boto3 = [
+    {file = "boto3-1.14.44-py2.py3-none-any.whl", hash = "sha256:b1936392d1491b4de04a972636c91904ec814519d8847d11e3375d77d5df1b12"},
+    {file = "boto3-1.14.44.tar.gz", hash = "sha256:01d45a986abd81d4b55f5649060fcbc49f6f87deaa508b99367a9d9ea21c0347"},
+]
+botocore = [
+    {file = "botocore-1.17.44-py2.py3-none-any.whl", hash = "sha256:1b46ffe1d13922066c873323186cbf97e77c137e08e27039d9d684552ccc4892"},
+    {file = "botocore-1.17.44.tar.gz", hash = "sha256:1f6175bf59ffa068055b65f7d703eb1f748c338594a40dfdc645a6130280d8bb"},
+]
+docutils = [
+    {file = "docutils-0.15.2-py2-none-any.whl", hash = "sha256:9e4d7ecfc600058e07ba661411a2b7de2fd0fafa17d1a7f7361cd47b1175c827"},
+    {file = "docutils-0.15.2-py3-none-any.whl", hash = "sha256:6c4f696463b79f1fb8ba0c594b63840ebd41f059e92b31957c46b74a4599b6d0"},
+    {file = "docutils-0.15.2.tar.gz", hash = "sha256:a2aeea129088da402665e92e0b25b04b073c04b2dce4ab65caaa38b7ce2e1a99"},
+]
+jmespath = [
+    {file = "jmespath-0.10.0-py2.py3-none-any.whl", hash = "sha256:cdf6525904cc597730141d61b36f2e4b8ecc257c420fa2f4549bac2c2d0cb72f"},
+    {file = "jmespath-0.10.0.tar.gz", hash = "sha256:b85d0567b8666149a93172712e68920734333c0ce7e89b78b3e987f71e5ed4f9"},
+]
 paho-mqtt = [
     {file = "paho-mqtt-1.5.1.tar.gz", hash = "sha256:9feb068e822be7b3a116324e01fb6028eb1d66412bf98595ae72698965cb1cae"},
 ]
+python-dateutil = [
+    {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
+    {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
+]
+s3transfer = [
+    {file = "s3transfer-0.3.4-py2.py3-none-any.whl", hash = "sha256:1e28620e5b444652ed752cf87c7e0cb15b0e578972568c6609f0f18212f259ed"},
+    {file = "s3transfer-0.3.4.tar.gz", hash = "sha256:7fdddb4f22275cf1d32129e21f056337fd2a80b6ccef1664528145b72c49e6d2"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+urllib3 = [
+    {file = "urllib3-1.25.11-py2.py3-none-any.whl", hash = "sha256:f5321fbe4bf3fefa0efd0bfe7fb14e90909eb62a48ccda331726b4319897dd5e"},
+    {file = "urllib3-1.25.11.tar.gz", hash = "sha256:8d7eaa5a82a1cac232164990f04874c594c9453ec55eef02eab885aa02fc17a2"},
+]
diff --git a/pyproject.toml b/pyproject.toml
index 1d4c0cd..559bbff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "sondehub"
-version = "0.1.5"
+version = "0.1.7"
 description = "SDK to access SondeHub open data"
 authors = ["Michaela <git@michaela.lgbt>"]
 readme = "README.md"
@@ -12,6 +12,7 @@ license = "GPL-3.0-or-later"
 [tool.poetry.dependencies]
 python = "^3.6"
 paho-mqtt = "^1.5.1"
+boto3 = "^1.14.44"
 
 [tool.poetry.dev-dependencies]
 
diff --git a/sondehub/__init__.py b/sondehub/__init__.py
index 8c04439..f76fd29 100644
--- a/sondehub/__init__.py
+++ b/sondehub/__init__.py
@@ -2,6 +2,14 @@ import paho.mqtt.client as mqtt
 from urllib.parse import urlparse
 import http.client
 import json
+import boto3
+import sys
+import threading
+from queue import Queue
+import queue
+
+
+S3_BUCKET = "sondehub-open-data"
 
 
 class Stream:
@@ -73,3 +81,58 @@ class Stream:
 
     def disconnect(self):
         self.mqttc.disconnect()
+
+
+class Downloader(threading.Thread):
+    def __init__(
+        self, tasks_to_accomplish, tasks_that_are_done, debug=False, *args, **kwargs
+    ):
+        self.tasks_to_accomplish = tasks_to_accomplish
+        self.tasks_that_are_done = tasks_that_are_done
+        self.debug = debug
+        super().__init__(*args, **kwargs)
+
+    def run(self):
+        s3 = boto3.client("s3")
+        while True:
+            try:
+                task = self.tasks_to_accomplish.get_nowait()
+            except queue.Empty:
+                return
+            data = s3.get_object(Bucket=task[0], Key=task[1])
+            response = json.loads(data["Body"].read())
+            if self.debug:
+                print(response)
+            self.tasks_that_are_done.put(response)
+            self.tasks_to_accomplish.task_done()
+
+
+def download(serial=None, datetime_prefix=None, debug=False):
+    if serial:
+        prefix_filter = f"serial/{serial}/"
+    elif serial and datetime_prefix:
+        prefix_filter = f"serial/{serial}/{datetime_prefix}"
+    elif datetime_prefix:
+        prefix_filter = f"date/{datetime_prefix}"
+    else:
+        prefix_filter = "date/"
+
+    s3 = boto3.resource("s3")
+    bucket = s3.Bucket(S3_BUCKET)
+    data = []
+
+    number_of_processes = 50
+    tasks_to_accomplish = Queue()
+    tasks_that_are_done = Queue()
+
+    for s3_object in bucket.objects.filter(Prefix=prefix_filter):
+        tasks_to_accomplish.put((s3_object.bucket_name, s3_object.key))
+
+    for _ in range(number_of_processes):
+        Downloader(tasks_to_accomplish, tasks_that_are_done, debug).start()
+    tasks_to_accomplish.join()
+
+    while not tasks_that_are_done.empty():
+        data.append(tasks_that_are_done.get())
+
+    return data