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 ...

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; ...

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 U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

Though exercising outdoors can usually be a great way to stay healthy, the 101-150 range on the Air Quality Index is probably the highest level at which it remains safe to do so.

You’re not imagining that campfire smell — thick smoke from Canadian wildfires has settled over Minnesota again, with air ...

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 ...

The air quality index score is expected to rise to 105, which falls into the "unhealthy for sensitive groups" range of 100-150. The AQI scale is from 0 to 500. Higher numbers indicate worse air ...

In Lansing, as of 9 a.m. on June 6, AirNow's Air Quality Index reflected an "moderate" reading with a PM2.5 of 81 — meaning, the air quality is acceptable, however, could be harmful for ...

The Iowa DNR on Tuesday issued a statewide Air Quality Alert through 6 a.m. Thursday. The agency warned that the Air Quality Index may reach the red or unhealthy category in affected areas.