The concentration of fine particulate matter, the deadliest type of air pollutant, in Elmhurst and Corona is , slightly higher than the city average. Fifteen percent of Elmhurst and Corona residents are smokers, which is equal to the city average of 14% of residents being smokers. In Elmhurst and Corona, 20% of residents are obese, 9% are diabetic, and 23% have high blood pressure—compared to the citywide averages of 20%, 14%, and 24% respectively. In addition, 24% of children are obese, compared to the citywide average of 20%.