#MonValleyAirPollutionWarning

Blog Against Smog

<UPDATED> Allegheny Co. Health Department Issues Mon Valley Air Pollution Warning for Tuesday

The Liberty-Clairton area woke up to unhealthy air quality again Tuesday, with EPA’s NowCast AQI soaring to 183 and hourly monitor data...

Allegheny Co. Health Dept. Issues Mon Valley Air Pollution Warning as PM2.5 Concentrations Spike

Photo by GASP Board Member Roger Day Editor’s Note: This blog was updated at 4:20 p.m. Nov. 7 to include additional information from the...

UPDATED: Allegheny County Council Votes Unanimously to Approve Mon Valley Air Pollution Episodic Reg

Note: This story was updated at 6:16 p.m. Sept. 14 to reflect information from Allegheny County Council’s meeting and again on Sept. 23...

Mon Valley Experiences Multi-Day Bad-Air Episode, Two More Air Quality Exceedances

It was a rough weekend of air quality for the Mon Valley, which experienced another days-long bad-air episode and two more air quality...

Advisory Committee Votes to Table Episodic Weather Regs, Health Department Says It Might Take it to

Draft episodic weather regulations long-sought by residents and air quality advocates could be sent out for public comment as soon as...