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Daymet Single Pixel Extraction Tool API

ornl · Location

Location No Auth Free & Open location

Welcome to the Daymet Single Pixel Extraction Tool API. You can use this API to download daily surface data within the Daymet database in a `csv` or `json` format for a single point. This API allows users to query a single geographic point by latitude and longitude in decimal degrees. A routine is executed that translates the (lon, lat) coordinates into projected Daymet (x,y) Lambert Conformal Coordinates. These coordinates are used to access the Daymet database of daily interpolated surface wea

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Preview Daymet Data in a web browser

Returns a table to the browser displaying requested data

https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv"
import requests
params = {
    "end": "example",
    "lat": "51.5074",
    "lon": "-0.1278",
    "vars": "example",
    "start": "example",
    "years": "example",
    "format": "csv"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview",
    params=params,
)
print(response.json())
const url = new URL('https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview');
url.searchParams.set('end', 'example');
url.searchParams.set('lat', '51.5074');
url.searchParams.set('lon', '-0.1278');
url.searchParams.set('vars', 'example');
url.searchParams.set('start', 'example');
url.searchParams.set('years', 'example');
url.searchParams.set('format', 'csv');

const response = await fetch(url); 
const data = await response.json();
console.log(data);
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview")
	q := baseURL.Query()
	q.Set("end", "example")
	q.Set("lat", "51.5074")
	q.Set("lon", "-0.1278")
	q.Set("vars", "example")
	q.Set("start", "example")
	q.Set("years", "example")
	q.Set("format", "csv")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}
require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview")
uri.query = URI.encode_www_form({
  "end" => "example",
  "lat" => "51.5074",
  "lon" => "-0.1278",
  "vars" => "example",
  "start" => "example",
  "years" => "example",
  "format" => "csv"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)
<?php
$url = "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/preview?" . http_build_query([
    "end" => "example",
    "lat" => "51.5074",
    "lon" => "-0.1278",
    "vars" => "example",
    "start" => "example",
    "years" => "example",
    "format" => "csv"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));
GET Visualize Daymet Data in a web browser

Returns plots to a web browser of requested data using Plotly

https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv"
import requests
params = {
    "end": "example",
    "lat": "51.5074",
    "lon": "-0.1278",
    "vars": "example",
    "start": "example",
    "years": "example",
    "format": "csv"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize",
    params=params,
)
print(response.json())
const url = new URL('https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize');
url.searchParams.set('end', 'example');
url.searchParams.set('lat', '51.5074');
url.searchParams.set('lon', '-0.1278');
url.searchParams.set('vars', 'example');
url.searchParams.set('start', 'example');
url.searchParams.set('years', 'example');
url.searchParams.set('format', 'csv');

const response = await fetch(url); 
const data = await response.json();
console.log(data);
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize")
	q := baseURL.Query()
	q.Set("end", "example")
	q.Set("lat", "51.5074")
	q.Set("lon", "-0.1278")
	q.Set("vars", "example")
	q.Set("start", "example")
	q.Set("years", "example")
	q.Set("format", "csv")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}
require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize")
uri.query = URI.encode_www_form({
  "end" => "example",
  "lat" => "51.5074",
  "lon" => "-0.1278",
  "vars" => "example",
  "start" => "example",
  "years" => "example",
  "format" => "csv"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)
<?php
$url = "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/visualize?" . http_build_query([
    "end" => "example",
    "lat" => "51.5074",
    "lon" => "-0.1278",
    "vars" => "example",
    "start" => "example",
    "years" => "example",
    "format" => "csv"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));
GET Download Daymet Data

Returns a csv or json of the requested data to local machine

https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data?end=example&lat=51.5074&lon=-0.1278&vars=example&start=example&years=example&format=csv"
import requests
params = {
    "end": "example",
    "lat": "51.5074",
    "lon": "-0.1278",
    "vars": "example",
    "start": "example",
    "years": "example",
    "format": "csv"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data",
    params=params,
)
print(response.json())
const url = new URL('https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data');
url.searchParams.set('end', 'example');
url.searchParams.set('lat', '51.5074');
url.searchParams.set('lon', '-0.1278');
url.searchParams.set('vars', 'example');
url.searchParams.set('start', 'example');
url.searchParams.set('years', 'example');
url.searchParams.set('format', 'csv');

const response = await fetch(url); 
const data = await response.json();
console.log(data);
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data")
	q := baseURL.Query()
	q.Set("end", "example")
	q.Set("lat", "51.5074")
	q.Set("lon", "-0.1278")
	q.Set("vars", "example")
	q.Set("start", "example")
	q.Set("years", "example")
	q.Set("format", "csv")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}
require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data")
uri.query = URI.encode_www_form({
  "end" => "example",
  "lat" => "51.5074",
  "lon" => "-0.1278",
  "vars" => "example",
  "start" => "example",
  "years" => "example",
  "format" => "csv"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)
<?php
$url = "https://api.apis.guru/v2/specs/ornl.gov/daymet/1.0.2/api/data?" . http_build_query([
    "end" => "example",
    "lat" => "51.5074",
    "lon" => "-0.1278",
    "vars" => "example",
    "start" => "example",
    "years" => "example",
    "format" => "csv"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗
  1. See official documentation for authentication and setup.

What can you build with Daymet Single Pixel Extraction Tool API?

Daymet Single Pixel Extraction Tool API is a Location API. Developers commonly use location APIs for:

  • tracking assets and vehicles in real time
  • building delivery and logistics apps
  • finding nearby businesses or services
  • geo-fencing and location-based notifications
  • address validation and autocomplete

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. Daymet Single Pixel Extraction Tool API is free to use, making it a low-risk choice to experiment with.

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