AnswerLive data
Can Claude check the UV index today?
Yes with web search, but not always from the official forecast. Claude cannot know today's UV Index from memory, because it changes every day with season, clouds and ozone. With web search on, Claude can find a weather page, but the number may come from any site, without the date or the hour it peaks. Connect the free UV Index Today server and Claude reads the EPA forecast for your ZIP code or city at the moment you ask, with the hourly peak, the hours when protection is needed and the time it was read.
What Claude does alone, and what needs the server
Claude on its own
- Explains the UV Index scale and what each level means for sun protection.
- Finds a forecast on a web page when web search is on.
With the UV Index Today server
- Today's EPA UV Index forecast for a US ZIP code or city, with a timestamp.
- The hourly forecast in local time and the hours when UV is 3 or higher.
- Whether a UV Alert is in effect today.
A real call to the live server
We sent this to the hosted server on 2026-11-05. The answer below is the server's own text, not a mock-up. Live values will differ when you ask.
You ask
What is the UV index today in Phoenix?
Tool call
get_uv_index_today {"city":"Phoenix","state":"AZ"} Server answer
EPA UV Index forecast for Phoenix, AZ on 2026-11-05 is 4, Moderate to High (3 to 7). Protection needed. The hourly forecast peaks at 4 at 11 AM local time, and is 3 or higher from 11 AM to 2 PM. No UV Alert is in effect.
You ask
When is the sun strongest today in Miami, ZIP 33101?
Tool call
get_uv_index_hourly {"zip":"33101"} Server answer
Hourly EPA UV Index forecast for Miami, FL (ZIP 33101) on 2026-11-05, 12 hours in local time. Peak 6 at 1 PM. UV is 3 or higher, where EPA says protection is needed, from 10 AM to 3 PM.
Connect it in 1 minute
One URL, no token, no account. In Claude.ai or Claude Desktop open Settings, then Connectors, then Add custom connector, and paste the URL.
Connector URL
https://uv-index-today-mcp.lipmichal.workers.dev/mcp
Claude Code
claude mcp add --transport http uv-index-today https://uv-index-today-mcp.lipmichal.workers.dev/mcp
Cursor (~/.cursor/mcp.json)
{
"mcpServers": {
"uv-index-today": {
"url": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp"
}
}
} VS Code (.vscode/mcp.json)
{
"servers": {
"uv-index-today": {
"type": "http",
"url": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp"
}
}
} All 3 tools, sources and more prompts are on the UV index today MCP server page.
Questions
Can Claude check the UV index today?
Where does the forecast come from?
Does it work outside the US?
Is the server free?
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