Allergies in San Diego can be a serious issue due to the city's mild climate and abundance of outdoor activities. San Diego is a popular destination for allergy sufferers due to its mild climate, which keeps pollen levels low. The city has a variety of allergens that can cause symptoms, including grasses, weeds, trees, and molds. Common allergy symptoms can include sneezing, runny nose, itchy eyes and skin, fatigue, and coughing. It is important to take precautions to prevent and manage allergies, such as using air filters, avoiding outdoor activities during peak pollen times, and using medications.