Air quality has reached unhealthy levels, with the Pollutant Standards Index (PSI) hitting 101. This reading falls within the unhealthy range, which spans from 101 to 200.

The PSI is used to measure air quality, and a reading of 101 to 200 indicates that the air is unhealthy.

Further details about the current air quality situation can be found in the source publication, which provides more information on the PSI reading and its implications.