This can be understood from the accompanying chart, which is a graphical translation of CPCB’s formula for converting PM2.5 concentrations into its subindex, which also ends up being the AQI for ...

Here is the Air Quality Index chart from the Centers for Disease Control and Prevention: Lung-Wen Antony Chen, an associate professor in the Department of Environmental and Occupational Health at ...

Wold explains. When the AQI creeps toward 100 (orange on the AQI chart) and up, you might notice respiratory symptoms like wheezing, shortness of breath, and coughing, he adds. Dr. Wold also ...

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