What is the air quality trend in Upper Saint Clair?

Over the past 8 days, Upper Saint Clair had an average AQI of 51 based on station measurements. The worst day was 2026-07-18 with AQI 76.

How is Upper Saint Clair air quality measured?

Air quality in Upper Saint Clair is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Upper Saint Clair, United States

Name: Upper Saint Clair Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Upper Saint Clair, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	30	27–33	7.2 µg/m³	2h	4
2026-07-21	41	10–64	10.0 µg/m³	24h	5
2026-07-20	37	20–74	9.1 µg/m³	24h	4
2026-07-19	41	17–72	10.6 µg/m³	24h	3
2026-07-18	76	26–365	32.9 µg/m³	22h	4
2026-07-17	71	21–158	23.4 µg/m³	24h	4
2026-07-16	63	7–136	18.8 µg/m³	23h	3
2026-07-15	56	21–104	15.6 µg/m³	20h	4

Back to Upper Saint Clair Air Quality