What is the air quality trend in Griffith?

Over the past 8 days, Griffith had an average AQI of 103 based on station measurements. The worst day was 2026-07-17 with AQI 233.

How is Griffith air quality measured?

Air quality in Griffith 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 Griffith, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Griffith, United States.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	65	32–98	19.4 µg/m³	22h	232
2026-07-20	99	63–106	34.6 µg/m³	24h	236
2026-07-19	111	57–160	40.7 µg/m³	24h	246
2026-07-18	50	32–88	12.9 µg/m³	24h	246
2026-07-17	233	68–362	179.7 µg/m³	24h	259
2026-07-16	154	51–327	100.6 µg/m³	24h	240
2026-07-15	59	51–179	17.5 µg/m³	24h	250
2026-07-14	59	59–59	15.9 µg/m³	1h	264

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