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's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

Unhealthy Air Quality Index level. Red: Indexes in the 151 to 200 range are considered "unhealthy." At this level, any member of the general public becomes susceptible to health effects.

What does PM2.5 mean on the air quality index? On the AQI, particulate matter readings, labeled "PM2.5," range from 0-301 or higher, and measure the fine particulate matter in the air , such as ...

As smoke from Canadian wildfires has made its way into the U.S., it is important to understand how the air quality index works. Here's what each color code means.

So it's also the color on the government chart showing the air quality index is more than 150, meaning unhealthy. When it's more than 200, it's purple, very unhealthy. This makes sense to ...

What is "Code Green" air quality? A "Code Green" values of index ranges from 0 to 50 and is considered "good" or "satisfactory." The air pollution poses little to no public health risk.

What do the AQI numbers and colors mean? The index runs from zero to 500. The higher the number, the worse the air quality. That range is broken down into six color-coded categories.

What does PM2.5 mean on the air quality index? On the AQI, particulate matter readings, labeled "PM2.5," range from 0-301 or higher, and measure the fine particulate matter in the air , such as ...

An air quality alert has been issued for all of Michigan for Sunday and Monday due to smoke from Canadian wildfires.

The AQI numbers run from 0 to 500. Here’s the breakdown: 0-50: Good. The air quality poses no risk. 51-100: Moderate. The air quality is OK for most people, but a few who are especially ...