Air Quality Alerts

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July 26, 2022 10:20 AM

July 26 - High Particulate Matter Readings

The current high and sustained Particulate Matter (PM) 10 and PM 2.5 readings which began in the afternoon on July 25 at the Boulder AIR ECC monitoring station are being investigated.

At this time, Boulder AIR experts suspect that the readings are an instrument error and are not reflective of current air quality conditions.

Additional information will be provided following an investigation into the instruments by the Boulder AIR team.

For more information on data and monitoring, please visit

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