The Environmental Protection Agency granted California an unlawful one-year extension for the state to comply with federal National Ambient Air Quality Standards for fine particulate matter, advocacy ...

High fine particulate matter levels in the air drive Wayne and Kalamazoo counties to be redesignated as nonattainment areas ...

One of the key changes proposed is the establishment of “cumulative impact” scores. They would represent the totality of ...

The modification of its Title V permit allows for a reconfiguration at the mill that will significantly reduce emissions of ...

HOUSTON — The Fifth Ward community can expect to see $20 million worth of change thanks to a grant from the Environmental ...

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

The RAQC is the lead air quality planning agency for the entire Ozone Non-Attainment Area. It develops the required state implementation plan (SIP) that details how we will attain compliance with ...

Air quality is also a growing concern for residents as the containment of these fires continues. At least 28 people have died, ABC News has reported. A forecast map from AccuWeather showed there ...

Gusts around 25 mph are possible Wednesday evening in the Altadena area ... detected by air quality instrumentation,” they may not be reflected in the Air Quality Index (AQI) map.

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

smoggy air mass to finally be pushed out of the area. But that's going to be replaced with wind blown dust and ash," said Air Quality Advisor Kati Chachere. While Santa Ana winds will clear smoke ...