NAAQS air quality index

While looking at a dataset about air quality, I opened an additional PDF document containing a table with air quality criteria. Even when I couldn't find good use for the data, this table seemed useful and deserved to be slightly more visible. Here you can see it again as it is, with no guarantee of accuracy.

NAAQS air quality index
Value 1hr ozone (ppm) 8hr ozone (ppm) Carbon monoxide (CO, ppm) Sulfur dioxide (SO2, ppb) Reactive oxides of nitrogen (NOy) Nitric oxide (NO, ppb) Nitrogen dioxide (NO2, ppb) Nitrogen oxides (NOx, ppb) 1hour particulate matter (PM2.5, µg/m3) 24hours particulate matter (PM2.5, µg/m3)
Good # 0.000 - 0.054 0.0 - 4.4 0 - 35 # # 0 - 53 # # 0.0 - 12.0
Moderate # 0.055 - 0.070 4.5 - 9.4 36 - 75 # # 54 - 100 # # 12.1 - 35.4
Unhealthy for sensitive groups 0.125 - 0.164 0.071 - 0.085 9.5 - 12.4 76 - 185 # # 101 - 360 # # 35.5 - 55.4
Unhealthy 0.165 - 0.204 0.086 - 0.105 12.5 - 15.4 186 - 304 # # 361 - 649 # # 55.5 - 150.4
Very unhealthy 0.205 - 0.504 0.106 - 0.200 15.5 - 40.4 305 - 604 # # 650 - 1249 # # 150.5 - 250.4
Hazardous 0.505+ 0.2+ 40.5+ 605 - 804 # # 1250 - 1649 # # 250.5+

If you know, for instance, the particulate matter rate for the last 24 hours, this enables you to show immediately recognized feedback in color and not simply a number which is hard to understand for most people. Do you know the current quality of the air you are breathing?