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Air quality · Texas, United States

Austin Air Quality Index (AQI) today

Modelled estimate for 06:00 local time (UTC-6), refreshed 3 Nov, 07:52 UTC+0.

23 Good

Live estimate · modelled

US EPA AQI06:00 UTC-6, 3 Nov Main pollutant: O₃

Air quality is satisfactory, and air pollution poses little or no risk.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 33.

Over the next 24 hours the model expects the AQI to range from 14 around 05:00 to 31 around 16:00 (3 Nov).

818th most polluted of 849 cities worldwide right now, 22nd of 25 in United States.

What to do today

  • Long walk or run outside OK
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is satisfactory, and air pollution poses little or no risk.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

07:00 · 57 08:00 · 59 09:00 · 55 10:00 · 53 11:00 · 51 12:00 · 44 13:00 · 41 14:00 · 39 15:00 · 40 16:00 · 40 17:00 · 40 18:00 · 39 19:00 · 38 20:00 · 36 21:00 · 33 22:00 · 31 23:00 · 30 00:00 · 29 01:00 · 27 02:00 · 26 03:00 · 24 04:00 · 24 05:00 · 23 06:00 · 23 07:00 · 23 08:00 · 23 09:00 · 23 10:00 · 23 11:00 · 24 12:00 · 26 13:00 · 27 14:00 · 28 15:00 · 30 16:00 · 31 17:00 · 31 18:00 · 31 19:00 · 30 20:00 · 28 21:00 · 26 22:00 · 23 23:00 · 21 00:00 · 19 01:00 · 18 02:00 · 17 03:00 · 16 04:00 · 15 05:00 · 14 06:00 · 14 07:00 · 17 08:00 · 20 09:00 · 19 10:00 · 17 11:00 · 17 12:00 · 19 13:00 · 23 14:00 · 27 15:00 · 31 16:00 · 35 17:00 · 37 18:00 · 38 19:00 · 38 20:00 · 36 21:00 · 34 22:00 · 31 23:00 · 29 00:00 · 26 01:00 · 26 Now

US EPA AQI per hour, UTC-6. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 07:0057
Mon 08:0059
Mon 09:0055
Mon 10:0053
Mon 11:0051
Mon 12:0044
Mon 13:0041
Mon 14:0039
Mon 15:0040
Mon 16:0040
Mon 17:0040
Mon 18:0039
Mon 19:0038
Mon 20:0036
Mon 21:0033
Mon 22:0031
Mon 23:0030
Tue 00:0029
Tue 01:0027
Tue 02:0026
Tue 03:0024
Tue 04:0024
Tue 05:0023
Tue 06:00 · Now23
Tue 07:00 · Forecast23
Tue 08:00 · Forecast23
Tue 09:00 · Forecast23
Tue 10:00 · Forecast23
Tue 11:00 · Forecast24
Tue 12:00 · Forecast26
Tue 13:00 · Forecast27
Tue 14:00 · Forecast28
Tue 15:00 · Forecast30
Tue 16:00 · Forecast31
Tue 17:00 · Forecast31
Tue 18:00 · Forecast31
Tue 19:00 · Forecast30
Tue 20:00 · Forecast28
Tue 21:00 · Forecast26
Tue 22:00 · Forecast23
Tue 23:00 · Forecast21
Wed 00:00 · Forecast19
Wed 01:00 · Forecast18
Wed 02:00 · Forecast17
Wed 03:00 · Forecast16
Wed 04:00 · Forecast15
Wed 05:00 · Forecast14
Wed 06:00 · Forecast14
Wed 07:00 · Forecast17
Wed 08:00 · Forecast20
Wed 09:00 · Forecast19
Wed 10:00 · Forecast17
Wed 11:00 · Forecast17
Wed 12:00 · Forecast19
Wed 13:00 · Forecast23
Wed 14:00 · Forecast27
Wed 15:00 · Forecast31
Wed 16:00 · Forecast35
Wed 17:00 · Forecast37
Wed 18:00 · Forecast38
Wed 19:00 · Forecast38
Wed 20:00 · Forecast36
Wed 21:00 · Forecast34
Wed 22:00 · Forecast31
Wed 23:00 · Forecast29
Thu 00:00 · Forecast26
Thu 01:00 · Forecast26

Pollutants this hour

  • PM2.5 1.5 µg/m³ 24-hour mean 6.1 µg/m³ · within WHO’s 24-hour guideline (15) 11
  • PM10 2 µg/m³ 2
  • O₃ 56 µg/m³ 23
  • NO₂ 4 µg/m³ 2
  • SO₂ 1 µg/m³ 0
  • CO 0.12 mg/m³ 1

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
San Antonio Texas 19
Houston Texas 52
Fort Worth Texas 26
Dallas Texas 26
Monterrey Mexico 55
Oklahoma City Oklahoma 21
Saltillo Mexico 43

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Austin’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Austin right now?
23 on the US EPA scale (Good) at 06:00 UTC-6, 3 Nov. O₃ is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Austin today?
For most people, yes. The EPA’s statement for “Good”: Air quality is satisfactory, and air pollution poses little or no risk. General guidance, not medical advice.

Will the air in Austin get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 14 around 05:00 to 31 around 16:00 (3 Nov). Forecasts beyond a day are less certain.

How does Austin compare with other cities?
Right now it is the 818th most polluted of 849 cities we track worldwide, and 22nd of 25 in United States, all on the same US EPA scale.

Why does another app show a different AQI for Austin?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.