Residents in Concord, California, are experiencing an earlier than usual allergy season, as discussed by a Stanford doctor. The shift in timing is attributed to recent weather patterns that have accelerated the blooming of allergenic plants. This phenomenon is causing discomfort among those sensitive to pollen and other allergens. The doctor highlighted that the early onset of allergy symptoms is becoming more common, potentially linked to broader climate changes affecting the region. The community is advised to prepare for prolonged exposure to allergens as the season progresses.