Website readiness profile · Snapshot 23 October 2026
windy.com
windy.com's public homepage, certificate and DNS checked against 31 practices and compared with 190 Weather Forecast sites.
- Readiness index
- 74/100
- Ahead of
- 82%
- Practices observed
- 19/29
- Popularity band
- Top 5K
Weather Forecast median 63
of measured Weather Forecast sites
2 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: windy.com. Thin bar: Weather Forecast peer median.
Enable
62/100
Peers 76
Harden
71/100
Peers 54
Accelerate
100/100
Peers 59
Recover
0/100
Peers 14
Priority fixes for windy.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Enable
robots.txt published
Observed: No robots.txt file was returned at the site root.
Why it matters: robots.txt is where crawlers look first for crawl rules and sitemap locations. Without it, they assume everything is open.
What to do: Publish /robots.txt with any crawl rules you need and a Sitemap: line pointing to your XML sitemap.
90% of Weather Forecast peers do this. Limit: Only the standard location was requested, once, at the time of the check.
Guide: Robots.txt Guide: Control Crawling Without Hiding Mistakes
Priority 2 · Harden
HSTS kept for at least a year
Observed: The homepage response did not include a Strict-Transport-Security header.
What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.
39% of Weather Forecast peers do this.
Priority 3 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
66% of Weather Forecast peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 4 · Harden
X-Content-Type-Options: nosniff
Observed: The homepage response did not include X-Content-Type-Options: nosniff.
What to do: Send X-Content-Type-Options: nosniff on all responses and make sure each file is served with the correct Content-Type.
46% of Weather Forecast peers do this.
What windy.com already does well
Practices fewer than half of Weather Forecast peers use.
- security.txt publishedsecurity.txt with a contact found.3.2% of peers
- Content Security Policy presentContent-Security-Policy present.22% of peers
- HTTP/3 advertisedHTTP/3 advertised.28% of peers
What we saw
- Homepage checked
- https://www.windy.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Google Trust Services, 90-day validity, expiring 2027-01-06
- CDN or edge
- Google edge
- DNS operators
- Amazon Route 53
- DMARC policy
- p=quarantine
- Homepage HTML
- 8 KB, br
- Images on homepage
- 1 (svg 1)
Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.
Stack and providers
Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.
All 31 checks
Select a gap for the method and fix. How each check works
Not observed 10
Observed 19
- HTTP requests move to HTTPS
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- security.txt published
- DMARC policy enforces quarantine or reject
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- No render-blocking scripts in <head>
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Not measured 2
- Modern image formats in use
- Offscreen images lazy-loaded
Own windy.com?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: windy.com. This profile covers configuration only.