And the SmellPGH reports from residents. Notice the wind direction pointing from Edgar Thomson into the SmellPGH reports. #AirQuality
June 16, 2026 at 4:33 PM
And the SmellPGH reports from residents. Notice the wind direction pointing from Edgar Thomson into the SmellPGH reports. #AirQuality
*Another* abysmal air quality day. Be safe and make complaints to ACHD & via SmellPGH:
February 10, 2026 at 12:40 PM
*Another* abysmal air quality day. Be safe and make complaints to ACHD & via SmellPGH:
A third of North America is breathing the worst air pollution ever, but it’s NOT trending on Bluesky?
WTAF.
Thank you SmellPGH app developers:
WTAF.
Thank you SmellPGH app developers:
July 17, 2026 at 7:39 AM
A third of North America is breathing the worst air pollution ever, but it’s NOT trending on Bluesky?
WTAF.
Thank you SmellPGH app developers:
WTAF.
Thank you SmellPGH app developers:
HEADS UP: H2S concentrations are off the charts today - if you smell it, make reports to Allegheny County Health Department & via SmellPGH:
March 10, 2026 at 12:56 PM
HEADS UP: H2S concentrations are off the charts today - if you smell it, make reports to Allegheny County Health Department & via SmellPGH:
SmellPGH is turning 10! Learn how air quality affects your health, help shape SmellPGH's future, and celebrate over refreshments! RSVP here: forms.gle/deAzQce3zFtq...
September 21, 2026 at 10:03 PM
SmellPGH is turning 10! Learn how air quality affects your health, help shape SmellPGH's future, and celebrate over refreshments! RSVP here: forms.gle/deAzQce3zFtq...
Congrats to SmellPGH on a decade tracking odors! The crowdsourced smell-reporting tool from CMU's CREATE Lab helps Pittsburghers document the air pollution they experience every day. They're having a party at Schenley Plaza on 9/30 from 4-7 p.m. so go celebrate with them!
https://bit.ly/4h8Coap
https://bit.ly/4h8Coap
September 23, 2026 at 12:26 AM
Congrats to SmellPGH on a decade tracking odors! The crowdsourced smell-reporting tool from CMU's CREATE Lab helps Pittsburghers document the air pollution they experience every day. They're having a party at Schenley Plaza on 9/30 from 4-7 p.m. so go celebrate with them!
https://bit.ly/4h8Coap
https://bit.ly/4h8Coap
How about telling McCormick that the proposed rollback of air and water standards I. The budget bill will make swpa even worse. Every day there’s poor air quality (look at SmellPGH every day).
And the Mon is already brown.
And the Mon is already brown.
June 16, 2025 at 5:20 PM
How about telling McCormick that the proposed rollback of air and water standards I. The budget bill will make swpa even worse. Every day there’s poor air quality (look at SmellPGH every day).
And the Mon is already brown.
And the Mon is already brown.
Ugh. Air quality in my part of #pittsburgh is bad enough that I fired up the smellPgh app again to fruitlessly yell about it.
I like many things about Pittsburgh. The air is not one of them.
I like many things about Pittsburgh. The air is not one of them.
November 24, 2025 at 1:56 PM
Ugh. Air quality in my part of #pittsburgh is bad enough that I fired up the smellPgh app again to fruitlessly yell about it.
I like many things about Pittsburgh. The air is not one of them.
I like many things about Pittsburgh. The air is not one of them.
Day 2 of horrific diesel exhaust smell in the South Hills. Report it SmellPGH
May 24, 2026 at 12:02 AM
Day 2 of horrific diesel exhaust smell in the South Hills. Report it SmellPGH
HEADS UP: Mon Valley residents waking up to stench & H2S concentrations that exceed the PA standard.
Again.
Smell it? Make complaints to the Allegheny Co. Health Dept. & via SmellPGH.
Again.
Smell it? Make complaints to the Allegheny Co. Health Dept. & via SmellPGH.
May 19, 2026 at 10:05 AM
HEADS UP: Mon Valley residents waking up to stench & H2S concentrations that exceed the PA standard.
Again.
Smell it? Make complaints to the Allegheny Co. Health Dept. & via SmellPGH.
Again.
Smell it? Make complaints to the Allegheny Co. Health Dept. & via SmellPGH.
🚨Stinkburgh Alert! Likely stench and elevated #air pollution tomorrow in #Pittsburgh. Stay alert and report smells to ACHD and SmellPGH app if you smell it! @gasp-pgh.bsky.social @breathe-project.bsky.social
March 20, 2026 at 1:33 AM
🚨Stinkburgh Alert! Likely stench and elevated #air pollution tomorrow in #Pittsburgh. Stay alert and report smells to ACHD and SmellPGH app if you smell it! @gasp-pgh.bsky.social @breathe-project.bsky.social
SmellPgh is a gem. If anything, when I wake at 4am wondering WTF is up with the air right now, seeing other people’s reports pop up tells me I’m NOT imagining it
April 24, 2026 at 1:24 PM
SmellPgh is a gem. If anything, when I wake at 4am wondering WTF is up with the air right now, seeing other people’s reports pop up tells me I’m NOT imagining it
HEADS UP #2: In addition to an Air Quality Warning, Mon Valley also woke up to stench & sky-high H2S levels - concentrations high enough to exceed PA's 24-hr average. Smell it? Please make complaints to Allegheny Co. Health Dept. and via the SmellPGH app:
January 31, 2026 at 3:20 PM
HEADS UP #2: In addition to an Air Quality Warning, Mon Valley also woke up to stench & sky-high H2S levels - concentrations high enough to exceed PA's 24-hr average. Smell it? Please make complaints to Allegheny Co. Health Dept. and via the SmellPGH app:
🚨🚨 #Stinkburgh Alert! Tonight and tomorrow night are likely to be stinky in Pittsburgh, PA. Elevated particles and VOC's are probably in our future. Submit complaints via SmellPGH app and to the Allegheny County Health Department. Gross. @gasp-pgh.bsky.social @breathe-project.bsky.social
March 2, 2025 at 4:38 PM
🚨🚨 #Stinkburgh Alert! Tonight and tomorrow night are likely to be stinky in Pittsburgh, PA. Elevated particles and VOC's are probably in our future. Submit complaints via SmellPGH app and to the Allegheny County Health Department. Gross. @gasp-pgh.bsky.social @breathe-project.bsky.social
🚨🚨#Stinkburgh Alert‼️ Worst this week. Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app. 🤮😷
June 4, 2025 at 11:58 AM
🚨🚨#Stinkburgh Alert‼️ Worst this week. Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app. 🤮😷
HEADS UP: Mon Valley waking up to stench & hydrogen sulfide levels that have again exceeded the PA standard.
Smell it? Impacted by it? Please make reports to Allegheny County Health Department & SmellPGH.
Enough is enough. Today is the 60th such exceedance so far this year.
Smell it? Impacted by it? Please make reports to Allegheny County Health Department & SmellPGH.
Enough is enough. Today is the 60th such exceedance so far this year.
June 4, 2026 at 11:26 AM
HEADS UP: Mon Valley waking up to stench & hydrogen sulfide levels that have again exceeded the PA standard.
Smell it? Impacted by it? Please make reports to Allegheny County Health Department & SmellPGH.
Enough is enough. Today is the 60th such exceedance so far this year.
Smell it? Impacted by it? Please make reports to Allegheny County Health Department & SmellPGH.
Enough is enough. Today is the 60th such exceedance so far this year.
🚨#Stinkburgh Alert ‼️ Strong sulfur smell this AM in Pittsburgh. Report it via ACHD website and SmellPGH app. 😩😤
March 10, 2025 at 12:52 PM
🚨#Stinkburgh Alert ‼️ Strong sulfur smell this AM in Pittsburgh. Report it via ACHD website and SmellPGH app. 😩😤
🚨#Stinkburgh Alert! Suffocating burnt plastic smell in Squirrel Hill South right now. Winds coming from the south per my new little Tempest weather station. Not sure what it is. Ugh. SmellPGH shows I’m not the only one smelling it.
September 12, 2025 at 1:14 PM
🚨#Stinkburgh Alert! Suffocating burnt plastic smell in Squirrel Hill South right now. Winds coming from the south per my new little Tempest weather station. Not sure what it is. Ugh. SmellPGH shows I’m not the only one smelling it.
🚨🚨#Stinkburgh Alert‼️ Horrible stench this AM. Smells like sulfur. We need to do better. #airquality
April 24, 2025 at 12:57 PM
🚨🚨#Stinkburgh Alert‼️ Horrible stench this AM. Smells like sulfur. We need to do better. #airquality
HEADS UP: H2S in the Mon Valley is CRAZY HIGH right now. Especially so at the N. Braddock monitor.
Smell it? 🤮 Then make reports to the health department & via SmellPGH.
Smell it? 🤮 Then make reports to the health department & via SmellPGH.
February 25, 2025 at 1:55 PM
HEADS UP: H2S in the Mon Valley is CRAZY HIGH right now. Especially so at the N. Braddock monitor.
Smell it? 🤮 Then make reports to the health department & via SmellPGH.
Smell it? 🤮 Then make reports to the health department & via SmellPGH.
HEADS UP: Liberty-Clairton area waking up to hydrogen sulfide (H2S)levels that exceed PA’s 24-hr avg standard.
Smell it…the rotten egg odor? Please make reports to ACHD & via SmellPGH. 😷
Smell it…the rotten egg odor? Please make reports to ACHD & via SmellPGH. 😷
September 29, 2025 at 11:57 AM
HEADS UP: Liberty-Clairton area waking up to hydrogen sulfide (H2S)levels that exceed PA’s 24-hr avg standard.
Smell it…the rotten egg odor? Please make reports to ACHD & via SmellPGH. 😷
Smell it…the rotten egg odor? Please make reports to ACHD & via SmellPGH. 😷
🚨🚨#Stinkburgh Alert‼️🤮 It's just awful outside. Loads of SmellPGH reports. Elevated VOC's, particles, and H2S pollution. The foul sulfur odor woke me up early this morning. Submit complaints to ACHD & SmellPGH app if you smell it. #AirQuality @gasp-pgh.bsky.social @breathe-project.bsky.social
February 17, 2026 at 2:39 PM
🚨🚨#Stinkburgh Alert‼️🤮 It's just awful outside. Loads of SmellPGH reports. Elevated VOC's, particles, and H2S pollution. The foul sulfur odor woke me up early this morning. Submit complaints to ACHD & SmellPGH app if you smell it. #AirQuality @gasp-pgh.bsky.social @breathe-project.bsky.social
HEADS UP: Concentrations of hydrogen sulfide (H2S) have exceeded PA’s 24-hr average standard today. Smell rotten eggs? Sulfur? Make complaints to the health dept and via the SmellPGH app. 😷
March 29, 2025 at 6:03 PM
HEADS UP: Concentrations of hydrogen sulfide (H2S) have exceeded PA’s 24-hr average standard today. Smell rotten eggs? Sulfur? Make complaints to the health dept and via the SmellPGH app. 😷
Looks like there was/is an inversion which has kept a lot of particulates from the various coke works trapped over the city. Map from SmellPGH app of the many many bad smell reports on Sunday & those three yellow circles show bad air quality on the sensors:
February 16, 2026 at 6:15 AM
Looks like there was/is an inversion which has kept a lot of particulates from the various coke works trapped over the city. Map from SmellPGH app of the many many bad smell reports on Sunday & those three yellow circles show bad air quality on the sensors:
Allegheny County is experiencing extremely bad pollution smell today at said result most likely of the USX Braddock plant incident. We are seeing high readings of sulfur dioxide and hydrogen sulfide. Report on SmellPgh
February 26, 2025 at 3:47 PM
Allegheny County is experiencing extremely bad pollution smell today at said result most likely of the USX Braddock plant incident. We are seeing high readings of sulfur dioxide and hydrogen sulfide. Report on SmellPgh