AirNow Scraper
Spider read airnow.gov in 11.2 s without a browser and returned 43 lines of clean markdown, including the section "The NowCast AQI".
Some areas issue AQI forecasts for several days, to help you plan. But because things can change, it’s a good idea to check the forecast every day.### The NowCast AQI**What it is:** The NowCast AQI shows your current air quality using the AQI colors and scale.**Who issues it:** EPA uses two algorithms, called “NowCasts,” to relate hourly readings from air quality monitors to the AQI for ozone and the AQI for particle pollution.**What pollutants it covers:** EPA calculates a NowCast for two pollutants: ozone and particle pollution. There is a separate algorithm for each.**What time frame it covers: **The NowCast shows you air quality for the most current hour available by using a calculation that involves multiple hours of past data. The NowCast uses longer averages during periods of stable air quality and shorter averages when air quality is changing rapidly, such as during a wildfire.**What it tells you: **The NowCast gives you the latest information on air quality where you are. Because air quality can change during the day, you can expect to see the NowCast AQI change, too.**Where you can get it: **Anywhere you see “current air quality” information on AirNow.gov -- that has been calculated using the NowCast. The AirNow app and the AirNow widget use the NowCast, too. EPA also provides current air quality information to state and local agencies, media, app developers and others, through its Application Programming Interface (also called an API).**How to use it: **Check the NowCast AQI to see if now is a good time for your outdoor activity. Even on days when the AQI forecast isn’t good, there may be times during the day when air quality is OK for outdoor activity.**Technical information about the NowCast algorithms****Technical Assistance Document for the Reporting of Daily Air Quality**The same call, in code.
The capture above came back as markdown. These examples add a key, so you get browser rendering, proxies, and concurrency on airnow.gov.
import { SpiderBrowser } from "spider-browser";
const spider = new SpiderBrowser({
apiKey: process.env.SPIDER_API_KEY!,
});
await spider.connect();
const page = spider.page!;
await page.goto("https://www.airnow.gov/?city=New%20York&state=NY&country=USA");
// No selectors, no schema. Spider reads the page and names the fields.
const data = await page.scrape();
console.log(data);
await spider.close();import { SpiderBrowser } from "spider-browser";
const spider = new SpiderBrowser({
apiKey: process.env.SPIDER_API_KEY!,
});
await spider.connect();
const page = spider.page!;
await page.goto("https://www.airnow.gov/?city=New%20York&state=NY&country=USA");
await page.content();
const data = await page.extractFields({
aqi: ".aqi-value",
category: ".aqi-category",
pollutant: ".primary-pollutant",
healthMessage: ".health-message",
forecast: ".forecast-text",
lastUpdated: ".last-updated",
location: ".location-name",
});
console.log(data);
await spider.close();Ready for volume? Get an API key →
Fields you can pull.
Spider names these from the page. The capture above came back as markdown; the same
call with return_format: "json" returns them as keys.
What airnow.gov costs to scrape.
The capture above cost $0.000021 to fetch. Pricing is $1 per GB of pre-transformation bandwidth plus $0.001 per CPU minute, so a page like this one lands at a fraction of a cent. Failed requests are billed at $0.
- Free balance on signup
- No card required to test
- Balance never expires
Run it keyless, no account
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Start scraping airnow.gov.
You already have the call. A key raises the rate limit and turns on browser rendering, proxies, and concurrency. Balance never expires, and top-ups go through secure checkout.