At most stations, PM2.5 and PM10 values reached a maximum of 424 limits or very close to it under the ‘severe’ category between these hours with the live stations graph turning dark red. AQI ...

The Air Quality Index (AQI) uses a color-coded system to inform the public about air quality levels. Fine particulate matter (PM2.5) is a dangerous pollutant that can cause serious health problems.

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

Air quality in the U.S. is measured by the Environmental Protection Agency (EPA) using an air quality index (AQI), which rates air quality on a scale of zero to 500. To determine a location’s ...

The Delhi government, under new chief minister Atishi, does not want to be caught unawares when that ominous AQI (air quality index) graph starts heading north and never really comes down for a ...

How can Chicago-area residents find their AQI? AirNow provides a tool for residents to search their ZIP code to see what their forecasted air quality is, both in real time and for the days ahead.

Air quality alerts were issued across the Upper Midwest, including the entire state of Minnesota. Fox Weather. Despite the high AQI readings and satellite imagery, most of the smoke remained ...

Air quality levels are expected to exceed an Air Quality Index (AQI) value of 100, indicating that air pollution levels may pose a health concern, especially for sensitive groups.

An AQI between 201-300 can cause breathing discomfort to most people on prolonged exposure. The AQI graph had first crossed 200 in the city on October 20, before hitting 250 on October 23.

What does the air quality index mean? The AQI shows the outdoor air quality for public health. It features six color-coded categories, from good (0-50) to hazardous (301 plus).

The AQI was already at 102 in the north and west suburbs of Chicago as of 8 a.m. this morning, meaning the air is unhealthy for sensitive groups, according to the EPA.