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

PM2.5 (particles of diameter 2.5 micrometres or less) concentration for 24 hours ending 4pm on November 18 was 549.6 microgram per cubic metre (µg/m3) and 676 µg/m3 at Jawaharlal Nehru Stadium ...

Karachi's air quality index (AQI) fluctuated in and out of the 'very unhealthy' range, while Lahore — once again — topped the global pollution chart on Sunday. The data from the he Swiss ...

As wildfires continue to rage in western Canada, the Environmental Protection Agency issued its first alert of the year for ...

Punjab capital Lahore witnessed a slight improvement in the smog levels after its air quality index (AQI) moved out of the "hazardous" range on Sunday, pushing the megapolis to the second spot on ...

The AQI chart is broken into six colors: green, yellow, orange, red, purple and maroon. Each color represents a range on the AQI chart from zero to 500, with zero being “satisfactory air quality ...

AQI Categories and Health Impacts Each AQI range carries different health warnings: Good (0–50): Minimal or no health impact. Satisfactory (51–100): Minor breathing discomfort in sensitive ...

See the chart below for the full range of the AQI. Wildfires release a lot of pollution into the atmosphere. The fine particulate matter in the smoke is especially bad for human lungs, and can ...

air quality in areas along the West Coast and inland as far as South Dakota ranges from “unhealthy” to “hazardous” on the air quality index (AQI). “Right now we need to establish a ...

AQI ranges from 0 to 500, with six different bands of AQI value equating to different levels of health concerns. A level of 0 to 50 is good, with little or no risk from air pollution; 51 to 100 is ...

As per the AQI bulletin by the Central Pollution Control Board (CPCB) at 4 pm, AQI in Jind was recorded at 337, while it was 303 in Karnal Two days after Diwali, the air quality index (AQI ...

As the chart shows, for PM2.5 concentrations up to 60 microgram per cubic metre (µg/m3), AQI increases by 1.67 for every 1µg/m3 increase in PM2.5 concentration. This happens in the AQI range of ...