Legends

Action Legend for Ozone

(Ref: UDAQ)


Unrestricted Action

No restrictions, but visible emissions from solid fuel burning devices must meet air quality regulations (see R307-302-5). Individuals are encouraged to limit emissions and choose cleaner transportation options.



Voluntary Action

Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.



Mandatory Action

Employers activate madatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.

Health Legend

Health Forecast
Air Quality Index (AQI) PM 2.5 Ozone
Good 0 - 12.0 µg/m3 0 - 0.054 ppm
Moderate 12.1 - 35.4 µg/m3 0.055 - 0.070 ppm
Unhealthy for Sensitive Groups 35.5 - 55.4 µg/m3 0.071 - 0.085 ppm
Unhealthy 55.5 - 150.4 µg/m3 0.086 - 0.105 ppm
Very Unhealthy 150.5 - 250.4 µg/m3 0.106 - 0.200 ppm
Hazardous Above 250.5 µg/m3 Above 0.201 ppm
Based on a 24-hour average. Based on an 8-hour average.
Good
Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate
Highly-sensitive people should consider reducing prolonged or heavy outdoor exertion.
Unhealthy for Sensitive Group
The following groups should reduce prolonged or heavy outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
Unhealthy
The following groups should reduce prolonged or heavy outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
Everyone else should limit prolonged outdoor exertion.
Very Unhealthy
The following groups should reduce prolonged or heavy outdoor exertion:
  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors
Everyone else should limit outdoor exertion.
Hazardous
This would trigger health warnings of emergency conditions. The entire population will most likely be affected.