"Super User" matching MCP connectors:

Current outdoor health risks and 48-hour hourly / 8-day daily forecasts by latitude and longitude: sunburn, heat illness, air quality, altitude, frostbite, hypothermia, and lightning. Free, no API key or auth; 1,000 calls/day shared across all users and 10 calls/minute per user. Known issue: daily slot labels appear to use standard time, so during daylight saving time a 6am slot is actually 7am local.

Hosted MCP server for solar vitamin D. Six public tools, no account needed: find a city, sun times and golden hour, the synthesis window for a day, the whole year of viable months at a latitude, whether right now is a good moment from live UV, and what a sun session produced. Four more read a signed-in user profile, cities and sun history over OAuth 2.1. Built on NOAA solar geometry, a Madronich clear-sky UV model with ozone, MED by Fitzpatrick skin type, and live Open-Meteo data.