Each Air Quality Index category, also known as the level of concern, is attached to a certain range of values: Good (green): 0 to 50 Moderate (yellow): 51 to 100 ...

The EPA breaks the Air Quality Index into a few categories with different recommendations. Green (0–50): The air is safe to ...

"Avoid all physical activity outdoors," the EPA advises at this level. According to the EPA's map, Picture Rocks and Marana ...

Air quality alerts were issued by the National Weather Service (NWS) in conjunction with local authorities for multiple ...

A measure called the Air Quality Index gauges just how bad the air has become in a particular place. Readings of 100 or higher usually serve as a warning to people who have respiratory conditions ...

Air quality indexes indicate how polluted the air is, or forecast how polluted it could become, based on levels of five ...

How do you protect yourself from bad air and smoke? Why the AQI falls short, explained. As Los Angeles smolders, the AQI can’t capture the full picture of wildfire smoke.

What counts as bad air? The EPA’s Air Quality Index converts all pollutant levels into a single number. The lower the number, the better. Anything below 50 is classified as “healthy.” ...

The EPA's Air Quality Index converts all pollutant levels into a single number. The lower the number, the better. Anything below 50 is classified as “healthy.” ...

The AQI shows the outdoor air quality for public health. It features six color-coded categories, from good (0-50) to hazardous (301 plus). More: Bad air days easier to identify and quantify with ...

The city's air quality index (AQI) score was 122 as of 8 a.m. June 4, putting it in the unhealthy for sensitive groups range of 101-150. Sensitive groups may include children, teens, older adults ...