今日鱼情 (fish.satloot.com) is a free fishing-weather and bite-forecast tool. You search a water body by name — rivers, lakes, reservoirs, bays — or tap a point on a map, and it produces a 7-day forecast for that spot: an outing index, the best fishing windows, water temperature, pressure, tide and wave height, plus spot, water-layer and bait suggestions and safety warnings. It covers river, lake, reservoir and sea fishing, and both still-fishing (野钓) and lure (路亚).
The scoring is published openly: each hour is weighted 0-100 from eight factors (water temp 25, pressure 20, temperature change 15, wind 10, sky 10, time-of-day 10, moon/tide 5, water body 5), smoothed over a three-hour window, and the day's index blends the best six hours (60%) with the all-day average (40%); stormy or high-wave days are capped for safety. Weather, wave and tide data come from public meteorological sources and water-body locations from open map data; the site states there is no server collecting data and it does not record your location. The interface is in Chinese (with an EN toggle), and it advises checking local fishing-ban seasons before heading out.