What is the air quality trend in Seguin?

Over the past 8 days, Seguin had an average AQI of 55 based on station measurements. The worst day was 2026-08-04 with AQI 85.

How is Seguin air quality measured?

Air quality in Seguin 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 Seguin, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 7 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	24	18–38	5.9 µg/m³	9.6	5h	9
2026-08-07	51	19–107	14.6 µg/m³	10.2	24h	9
2026-08-06	63	30–155	19.0 µg/m³	13.6	24h	9
2026-08-05	85	59–149	27.9 µg/m³	27.6	24h	10
2026-08-04	85	38–152	28.0 µg/m³	33.2	24h	10
2026-08-03	48	32–101	13.0 µg/m³	20.6	24h	8
2026-08-02	48	24–69	12.3 µg/m³	19.0	24h	10
2026-08-01	40	21–71	10.2 µg/m³	8.8	17h	10

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