Summer ozone levels in the Eastern US can be partially predicted in the Spring from large-scale meteorological patterns, such as the Atlantic Multi-decadal Oscillation and tropical Atlantic sea surface temperatures. A statistical model developed by researchers at the Harvard Air Climate & Energy Center shows that especially high ozone concentrations in the summer months is correlated with warm tropical Atlantic and cold northeast Pacific sea-surface temperatures, as well as high-pressure anomalies over Hawaii and low-pressure anomalies over the Atlantic and North America. The model explains 45% of the variability in average concentrations and 30% of the variability for high-ozone episodes. Although current air quality models do not capture these effects, their use for seasonal predictions could be valuable for air quality management.