diff --git a/poetry.lock b/poetry.lock
index f58e95c..9f06ebf 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -934,6 +934,27 @@ files = [
     {file = "hiredis-2.3.2.tar.gz", hash = "sha256:733e2456b68f3f126ddaf2cd500a33b25146c3676b97ea843665717bda0c5d43"},
 ]
 
+[[package]]
+name = "httpcore"
+version = "1.0.4"
+description = "A minimal low-level HTTP client."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "httpcore-1.0.4-py3-none-any.whl", hash = "sha256:ac418c1db41bade2ad53ae2f3834a3a0f5ae76b56cf5aa497d2d033384fc7d73"},
+    {file = "httpcore-1.0.4.tar.gz", hash = "sha256:cb2839ccfcba0d2d3c1131d3c3e26dfc327326fbe7a5dc0dbfe9f6c9151bb022"},
+]
+
+[package.dependencies]
+certifi = "*"
+h11 = ">=0.13,<0.15"
+
+[package.extras]
+asyncio = ["anyio (>=4.0,<5.0)"]
+http2 = ["h2 (>=3,<5)"]
+socks = ["socksio (==1.*)"]
+trio = ["trio (>=0.22.0,<0.25.0)"]
+
 [[package]]
 name = "httptools"
 version = "0.6.1"
@@ -982,6 +1003,30 @@ files = [
 [package.extras]
 test = ["Cython (>=0.29.24,<0.30.0)"]
 
+[[package]]
+name = "httpx"
+version = "0.27.0"
+description = "The next generation HTTP client."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "httpx-0.27.0-py3-none-any.whl", hash = "sha256:71d5465162c13681bff01ad59b2cc68dd838ea1f10e51574bac27103f00c91a5"},
+    {file = "httpx-0.27.0.tar.gz", hash = "sha256:a0cb88a46f32dc874e04ee956e4c2764aba2aa228f650b06788ba6bda2962ab5"},
+]
+
+[package.dependencies]
+anyio = "*"
+certifi = "*"
+httpcore = "==1.*"
+idna = "*"
+sniffio = "*"
+
+[package.extras]
+brotli = ["brotli", "brotlicffi"]
+cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
+http2 = ["h2 (>=3,<5)"]
+socks = ["socksio (==1.*)"]
+
 [[package]]
 name = "idna"
 version = "3.6"
@@ -2796,4 +2841,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11,<3.13"
-content-hash = "2c99565061d87c9768092f2b4a56156300932c86d320c6156a282a688b3fefc0"
+content-hash = "0555b82e90d32242c400ee63fc6684f4eb0cb91760d51df04054762d32cd435c"
diff --git a/pyproject.toml b/pyproject.toml
index e40c086..b091697 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ astropy = "^6.0.0"
 astroplan = "^0.9.1"
 polars = "^0.20.16"
 redis = {version = "^5.0.3", extras = ["hiredis"]}
+httpx = "^0.27.0"
 
 [tool.poetry.group.dev.dependencies]
 ipython = ">=8.0.0"
diff --git a/src/lvmapi/app.py b/src/lvmapi/app.py
index 621d115..413e3b6 100644
--- a/src/lvmapi/app.py
+++ b/src/lvmapi/app.py
@@ -11,7 +11,14 @@
 from fastapi import FastAPI
 
 from lvmapi import auth
-from lvmapi.routers import ephemeris, overwatcher, slack, spectrographs, telescopes
+from lvmapi.routers import (
+    ephemeris,
+    overwatcher,
+    slack,
+    spectrographs,
+    telescopes,
+    weather,
+)
 
 
 app = FastAPI()
@@ -21,6 +28,7 @@
 app.include_router(slack.router)
 app.include_router(ephemeris.router)
 app.include_router(overwatcher.router)
+app.include_router(weather.router)
 
 
 @app.get("/")
diff --git a/src/lvmapi/routers/weather.py b/src/lvmapi/routers/weather.py
new file mode 100644
index 0000000..661f775
--- /dev/null
+++ b/src/lvmapi/routers/weather.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# @Author: José Sánchez-Gallego (gallegoj@uw.edu)
+# @Date: 2024-03-26
+# @Filename: weather.py
+# @License: BSD 3-clause (http://www.opensource.org/licenses/BSD-3-Clause)
+
+from __future__ import annotations
+
+import polars
+from fastapi import APIRouter
+
+from lvmapi.tools.weather import get_weather_data
+
+
+router = APIRouter(prefix="/weather", tags=["weather"])
+
+
+@router.get("/")
+@router.get("/summary")
+async def get_weather(station: str = "DuPont") -> list[dict]:
+    """Returns the weather summary (last 60 minutes) from a weather station."""
+
+    df = await get_weather_data(station=station)
+
+    return df.with_columns(ts=polars.col.ts.dt.to_string("%FT%X")).to_dicts()
diff --git a/src/lvmapi/tools/weather.py b/src/lvmapi/tools/weather.py
new file mode 100644
index 0000000..98d0cb3
--- /dev/null
+++ b/src/lvmapi/tools/weather.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# @Author: José Sánchez-Gallego (gallegoj@uw.edu)
+# @Date: 2024-03-26
+# @Filename: weather.py
+# @License: BSD 3-clause (http://www.opensource.org/licenses/BSD-3-Clause)
+
+from __future__ import annotations
+
+import httpx
+import polars
+from astropy.time import Time, TimeDelta
+
+
+__all__ = ['get_weather_data']
+
+
+WEATHER_URL = "http://dataservice.lco.cl/vaisala/data"
+
+
+async def get_weather_data(
+    end_time: str | None = None,
+    start_time: str | float = 3600,
+    station="DuPont",
+):
+    """Returns weather data from the Vaisala weather station.
+
+    Parameters
+    ----------
+    end_time
+        The end time for the query. If not provided, the current time is used.
+        The time can be an Astropy Time object or a string in ISO format.
+    start_time
+        The start time for the query. The time can be an Astropy Time object,
+        a string in ISO format, or a float indicating with a time delta in seconds
+        with respect to ``end_time``.
+
+    Returns
+    -------
+    dataframe
+        A Polars dataframe with the time series weather data.
+
+    """
+
+    if station not in ["DuPont", "C40", "Magellan"]:
+        raise ValueError("station must be one of 'DuPont', 'C40', or 'Magellan'.")
+
+    if end_time is None:
+        end_time_ap = Time.now()
+    elif isinstance(end_time, str):
+        end_time_ap = Time(end_time)
+    elif isinstance(end_time, Time):
+        end_time_ap = end_time
+    else:
+        raise ValueError("end_time must be a string or an Astropy Time object.")
+
+    if isinstance(start_time, str):
+        start_time_ap = Time(start_time)
+    elif isinstance(start_time, (int, float)):
+        start_time_ap = end_time_ap - TimeDelta(start_time, format="sec")
+    elif isinstance(start_time, Time):
+        start_time_ap = start_time
+    else:
+        raise ValueError(
+            "start_time must be a string, a time delta in seconds, "
+            "or an Astropy Time object."
+        )
+
+    end_time_ap.precision = 0
+    start_time_ap.precision = 0
+
+    async with httpx.AsyncClient() as client:
+        response = await client.get(
+            WEATHER_URL,
+            params={
+                "start_ts": str(start_time_ap.iso),
+                "end_ts": str(end_time_ap.iso),
+                "station": station,
+            },
+        )
+
+        if response.status_code != 200:
+            raise ValueError(f"Failed to get weather data: {response.text}")
+
+        data = response.json()
+
+        if "Error" in data:
+            raise ValueError(f"Failed to get weather data: {data['Error']}")
+        elif "results" not in data or data["results"] is None:
+            raise ValueError("Failed to get weather data: no results found.")
+
+    results = data["results"]
+
+    df = polars.DataFrame(results)
+    df = df.with_columns(
+        ts=polars.col("ts").str.to_datetime(time_unit="ms"),
+        station=polars.lit(station, polars.String),
+    )
+
+    # Delete rows with all null values.
+    df = df.filter(~polars.all_horizontal(polars.exclude("ts").is_null()))
+
+    # Sort by timestamp
+    df = df.sort("ts")
+
+    return df