For outdoor events, weather is one of the most influential and often underestimated drivers of crowd safety risk. In this session, we'll discuss how weather forecasting, real-time monitoring, and clear decision thresholds can inform crowd safety decision-making. The conversation will explore how weather intelligence is used to support decisions around crowd movement, sheltering, evacuation, and event modification. The session will examine how timely, well-interpreted weather information strengthens situational awareness and helps teams act decisively before conditions deteriorate.