天气图（英语：weather chart）是将特定地区某段时间的气象要素表现在地图上，能够帮助阅读者掌握天气状况。天气图的创始者包括威廉·瑞德菲尔（William Redfield）、威廉·瑞德（William Reid）、艾力亚斯·卢米斯（Elias Loomis）、以及法兰西斯·高顿（Francis Galton），他们为了研究出一套关于暴风系统的理论，而制作出了第一张天气图。天气图是测量或追踪各种相关数值，例如气压、温度、云量等，再将之描绘在地图上。天气图上通常会标注各种记号，以代表云量、降水，或其他重要信息。举例来说，一个「H」符号代表高气压，将能够判定当地应该会有稳定的天气。而一个「L」记号则代表了低气压，通常会带来降水与不稳定的天气。此外，航空所用的天气图经常会包含湍流和大气结冰的记号。

A weather map displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, on a constant pressure surface of 300 mb or 250 mb show where the jet stream is located. Use of constant pressure charts at the 700 and 500 hPa level can indicate tropical cyclone motion. Two-dimensional streamlines based on wind speeds at various levels show areas of convergence and divergence in the wind field, which are helpful in determining the location of features within the wind pattern. A popular type of surface weather map is the surface weather analysis, which plots isobars to depict areas of high pressure and low pressure. Cloud codes are translated into symbols and plotted on these maps along with other meteorological data that are included in synoptic reports sent by professionally trained observers.