Editing Pittsburgh (section)

====Air quality====
[[United States Environmental Protection Agency]] (EPA) data from 2021 to 2024 shows that Pittsburgh's air quality was generally good or moderate.<ref>{{Cite web |last=US EPA |first=OAR |date=September 23, 2016 |title=Air Data - Multiyear Tile Plot |url=https://www.epa.gov/outdoor-air-quality-data/air-data-multiyear-tile-plot |access-date=February 7, 2024 |website=www.epa.gov |language=en}}</ref><ref>{{Cite web |title=EPA: Air Quality Trends By City 2000-2022 |url=https://www.epa.gov/system/files/documents/2023-05/airqualitytrendsbycity2000-2022.xlsx |website=EPA}}</ref>

Despite improvements, studies suggest Pittsburgh's air quality still impacts health. A 2014 to 2016 study found that children near pollution sources like industrial sites had asthma rates nearly three times the national average.<ref name="Frazier-2020">{{Cite web |last=Frazier |first=Reid |date=November 11, 2020 |title=Study: Pittsburgh kids near polluting sites have higher asthma rates |url=https://stateimpact.npr.org/pennsylvania/2020/11/11/study-pittsburgh-kids-near-polluting-sites-have-higher-asthma-rates/ |access-date=December 16, 2023 |website=StateImpact Pennsylvania |language=en}}</ref> It also revealed that 38% of students lived in areas exceeding EPA's particle pollution standards, and 70% in areas surpassing the WHO's standards.<ref name="Frazier-2020" /> Most affected communities were minority populations, leading some residents to believe that the continuing effects of air pollution are a case of environmental racism.<ref>{{Cite web |last=Hurdle |first=Jon |title=For Low-Income Pittsburgh, Clean Air Remains an Elusive Goal |url=https://e360.yale.edu/features/for-low-income-pittsburgh-clean-air-remains-an-elusive-goal |access-date=December 16, 2023 |website=Yale E360 |language=en-US}}</ref>

As of 2005, Pittsburgh had 31,000 trees along 900 miles of streets. A 2011 analysis valued the annual benefits of the city's [[urban forest]] between $10 and $13 million, based on contributions to aesthetics, energy use, and air quality. The city invests $850,000 annually in tree planting and maintenance.<ref>{{cite web |url=https://nextcity.org/daily/entry/that-tree-on-the-corner-may-be-worth-more-than-your-house |title=Tree on the Corner May Be Worth More Than Your House |last=Seltenrich |first=Nate |date=February 18, 2013 |website=[[Next City]] |access-date=May 18, 2019}}</ref>