The map below shows the current highest PM-2.5 (Local Conditions) 1-hour levels measured in micrograms per cubic meter (local conditions) (µg/m³ LC) for each of the metropolitan or other areas across Indiana where PM-2.5 (Local Conditions) is measured by the IDEM. More detailed maps showing the current 1-hour PM-2.5 (Local Conditions) levels measured at each site in a particular area are available by clicking on the boxes on the map. These levels are based on data measured at the IDEM's continuous air monitoring stations and may include data from local governments and private monitoring networks.
The latest imagery available is for Monday October 23, 2017 16-17:00 EDT.
The color-coding of the hourly PM-2.5 data is based on a 1-hour to 24-hour projection. This projection is based on statistics compiled over several years comparing the daily maximum 1-hour average to the midnight-to-midnight 24-hour average.
The table below shows the levels, color-coding, and suggested actions for both the 1-hour projection and the actual 24-hour standard.
|Color||Air Quality Rating||1-Hour
|Actions to take|
|There is no measurement for this area or site.|
|Good||0 - 15.4||0 - 12.0||
PLEASE NOTE: This data has not been verified by the IDEM and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from IDEM ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.