The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

Noida: Air quality in Noida and Ghaziabad plummeted to ‘poor' on Wednesday, after ten days of ‘moderate' and ‘satisfactory' ...

According to the AQEWS bulletin, “The air quality is expected to remain in the very poor category from Wednesday to Friday.

If you have been hearing about poor air quality in New York City Friday, you can breathe a deep sigh of relief (literally): ...

The AQI was recorded at 335 (very poor) at 10 am and 342 (very poor) at 11am on Wednesday, as compared to the 24-hour average ...

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Delhi on Wednesday recorded a minimum temperature of 7.6 degrees Celsius at 5:30 am, according to the India Meteorological ...

Referring to the air quality in many parts of having reached unhealthy levels, the National Building Research Organization ...

With calm winds, smoggy conditions, and low mixing height contributing to the pollution surge, Delhi’s 24-hour average AQI ...