What is the air quality trend in Hammond?

Over the past 8 days, Hammond had an average AQI of 99 based on station measurements. The worst day was 2026-07-17 with AQI 233.

How is Hammond air quality measured?

Air quality in Hammond 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 Hammond, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 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	6.6 µg/m³	2h	138
2026-07-21	63	32–98	18.4 µg/m³	24h	261
2026-07-20	100	69–107	34.9 µg/m³	24h	252
2026-07-19	111	67–160	40.9 µg/m³	24h	262
2026-07-18	50	31–89	12.9 µg/m³	24h	263
2026-07-17	233	69–357	179.7 µg/m³	24h	277
2026-07-16	156	51–330	102.0 µg/m³	24h	256
2026-07-15	57	52–140	14.8 µg/m³	21h	267

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