What is the air quality trend in Austin?

Over the past 8 days, Austin had an average AQI of 33 based on station measurements. The worst day was 2026-07-14 with AQI 50.

How is Austin air quality measured?

Air quality in Austin 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 Austin, United States

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

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

107

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

105h

PM2.5 Station

105h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	15	1–58	3.6 µg/m³	4.7	18h	1
2026-07-20	48	5–191	19.2 µg/m³	22.7	14h	1
2026-07-19	41	1–245	20.5 µg/m³	24.3	14h	1
2026-07-18	47	4–110	13.2 µg/m³	16.7	10h	1
2026-07-17	17	4–31	4.0 µg/m³	4.9	4h	1
2026-07-16	21	6–69	4.9 µg/m³	6.3	20h	1
2026-07-15	30	2–69	7.8 µg/m³	9.5	22h	1
2026-07-14	50	45–60	12.6 µg/m³	16.4	3h	1

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