What is the air quality trend in Griffith?

Over the past 8 days, Griffith had an average AQI of 99 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
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	28	23–32	6.7 µg/m³	2h	128
2026-07-21	63	32–98	18.5 µg/m³	24h	244
2026-07-20	99	69–106	34.8 µg/m³	24h	235
2026-07-19	112	67–160	40.9 µg/m³	24h	244
2026-07-18	49	31–88	12.8 µg/m³	24h	245
2026-07-17	233	69–358	179.6 µg/m³	24h	258
2026-07-16	154	51–328	100.5 µg/m³	24h	240
2026-07-15	57	52–140	14.8 µg/m³	22h	250

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