Saturday's weather forecast should provide us with a slight decrease of PM2.5 levels in Beijing in the morning, but levels should increase in the afternoon and evening. The early morning hours should start off Unhealthy or Unhealthy for Sensitive Groups , but the decreasing PM2.5 levels should move the conditions to Unhealthy for Sensitive Groups or Moderate . After noon, look for levels to increase as we move back through Unhealthy for Sensitive Groups to Unhealthy .
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