The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many Angelenos aren’t sure if the AQI tells the full story, especially given how ...

PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...

A special report from the National Capital Region details the invocation of the Graded Response Action Plan (GRAP) Phase 4 ...

Stage IV of GRAP, which is categorised as ‘Severe+’ air quality, is triggered when the Air Quality Index (AQI) in Delhi ...

The Air Quality Index (AQI) was recorded at 401 (severe) at 11 am on Saturday, according to data from the Central Pollution ...

The Commission for Air Quality Management on Saturday reimposed Stage 3 restrictions under the Graded Response Action Plan to ...

Delhi's air quality has plunged back into the 'severe' category, prompting authorities to reimpose Stage III restrictions ...

Revised GRAP advances severity thresholds, triggering stricter measures at lower AQI levels. Stage 4 curbs, including 50% ...

Delhi-NCR enforces Stage 4 GRAP curbs amidst severe air quality crisis, banning construction and restricting truck entry.

The Commission for Air Quality Management enforced GRAP Stage IV across Delhi-NCR as air quality slipped into the severe plus ...