At the last count, there were about a billion weather apps knocking around. Weather Underground rises above the dross through a clever panel-based approach. If you just want to scan the forecast and rainfall for the coming hour, you’re set. But if you are a weather wonk, desperate to check air quality, UV risk, and what the wind speed will be like at precisely 2pm tomorrow, scroll down a bit and the details will be there. You get widgets. You get customisation. You also, unfortunately, get ads – but they’re at least unobtrusive and can be nuked annually for £3.99 per month if you care that much.