Austin air quality now

United States · The summary is refreshed every 15 minutes.

October 22

The air is moderate now

Austin

25°C

Clear

51AQI

1022hPa

Atmospheric
pressure

50%

Humidity

Austin, October 21, 2026: daily mean PM2.5 9 µg/m³ (5 sensors), level “Low” — as in the Atmy Data Hub. Now (13:00 local time): 9.3 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Austin, PM2.5 averages 9.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 5 sensors on the Atmy network, readings from 12:47–12:47 local time (17:47–17:47 UTC), summary prepared at 13:00 local time. Median: 11.2 µg/m³; range across sensors: 3.3–12.5 µg/m³.

In Austin the air is moderate right now (approximate, US EPA scale). From 00:00 to 13:00 local time the city mean PM2.5 fell from 13.5 to 9.3 µg/m³.

The wind is weak (1 m/s): particles are likely accumulating near the ground.

Weather now: clear, 25°C, wind 1 m/s, humidity 50%. No major change in the wind is expected in the coming hours. By 00:00 the temperature will be about 19°C.

Written automatically at 13:00 local time (18:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

4 km/h

Wind, NNW

0 mm

Precipitation today

Austin: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · October 21, 2026 · 00:00–24:00 UTC

9 µg/m³ Low

Daily mean PM2.5 on October 21, 2026 (00:00–24:00 UTC): 9 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

LowModerateElevatedHighVery highExtremely high

Air Quality in United States for the Completed Day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · October 21, 2026 · 00:00–24:00 UTC

Portland →9 µg/m³Bellevue →9 µg/m³
LowModerateElevatedHighVery highExtremely high

Source: Air monitoring system atmy.ai

Austin: PM2.5 by month

Metric: PM2.5, µg/m³ · Color scale: EPA AQI

Mean
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
This month
8
8
6
10
9
9
6
13
9
8
7
6
9
7

Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.

Pollution accumulation index now

7%An estimate of weather conditions · not a PM2.5 forecast

Now75
13.0021.0004.0012.00

Pollution accumulation forecast

Today — October 22

29°/14°

Index by time of day

61/100Moderate

  1. 61/100Night
  2. 45/100Morning
  3. 9/100Day
  4. 19/100Evening

Friday — October 23

29°/15°

Index by time of day

55/100Moderate

  1. 55/100Night
  2. 40/100Morning
  3. 5/100Day
  4. 18/100Evening

Saturday — October 24

30°/16°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 41/100Morning
  3. 5/100Day
  4. 13/100Evening

Sunday — October 25

28°/19°

Index by time of day

45/100Moderate

  1. 45/100Night
  2. 34/100Morning
  3. 4/100Day
  4. 16/100Evening

Monday — October 26

27°/17°

Index by time of day

47/100Moderate

  1. 47/100Night
  2. 41/100Morning
  3. 7/100Day
  4. 15/100Evening

Tuesday — October 27

25°/21°

Index by time of day

53/100Moderate

  1. 53/100Night
  2. 39/100Morning
  3. 7/100Day
  4. 23/100Evening

Forecast of conditions that trap pollution near the surface

Weather

25°

Clear. Feels like 25°C

  1. MorningClear17°C76%
  2. DayClear29°C28%
  3. EveningCloudy22°C39%

Wind

4km/hWind from the NNW

4km/hWind gusts

Wind force: 1

Light wind is expected over the next few hours.

10-day weather forecast for Austin

United States

  1. TodayOct 22Cloudy29°C14°C
  2. FriOct 23Cloudy29°C15°C
  3. SatOct 24Cloudy30°C16°C
  4. SunOct 25Cloudy28°C19°C
  5. MonOct 26Cloudy27°C17°C
  6. TueOct 27Cloudy25°C21°C
  7. WedOct 28Partly cloudy29°C19°C
  8. ThuOct 29Cloudy27°C19°C
  9. FriOct 30Rain25°C19°C
  10. SatOct 31Rain23°C19°C

Where in Austin is the air worse?

See all sensors

Highest current reading: 12.5 µg/m³ (East Austin). Lowest: 3.3 µg/m³ (Adelphi Acre). The list shows every sensor, highest first.

  1. East Austin →13 µg/m³
  2. Downtown Austin →12 µg/m³
  3. Brodie Heights →11 µg/m³
  4. Knollwood on the Colorado →8 µg/m³
  5. Adelphi Acre →3 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: AirGradient — 5 sensors.

Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.

United States: sensors in total

41

  1. BellevueUnited States

    4

  2. PortlandUnited States

    4

  3. RenoUnited States

    3

Cities with the most sensors

All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.

Air quality calendar: Austin

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

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A card with the current PM2.5 in Austin: it is refreshed every 15 minutes and links to this page. Paste the code into your site.

Air quality in Austin now — Atmy

United States · City ranking · All pilot cities

Questions

What was the air quality in Austin over the last completed day?

Daily mean PM2.5 on October 21, 2026 (00:00–24:00 UTC): 9 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

What is the air quality in Austin right now?

Right now in Austin, PM2.5 averages 9.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 5 sensors on the Atmy network, readings from 12:47–12:47 local time (17:47–17:47 UTC), summary prepared at 13:00 local time. Median: 11.2 µg/m³; range across sensors: 3.3–12.5 µg/m³.

Is it safe to be outdoors in Austin now?

The current level is “moderate” (US EPA scale, approximate). Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.

Where in Austin is the air worse?

Highest current reading: 12.5 µg/m³ (East Austin). Lowest: 3.3 µg/m³ (Adelphi Acre). The list shows every sensor, highest first.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Is the air in Austin polluted?

Over the last 359 days with data, the mean daily PM2.5 in Austin was 7.9 µg/m³ — 1.6 times the WHO annual guideline (5 µg/m³). Over the last 30 days: 8.1 µg/m³. From Atmy's archive of daily city means.

When is the air in Austin cleanest?

In Atmy's daily archive, the cleanest month of the last year was August 2026: 6.1 µg/m³ on average.

When is the air in Austin most polluted?

The most polluted month of the last year was April 2026: 11.6 µg/m³ on average.

Is the air in Austin worse in the heating season?

From November to March the mean daily PM2.5 was 8.1 µg/m³, from June to August 7.0 µg/m³ (last 365 days).

Data

Where do these data come from?

The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.

“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.

Source: public Atmy monitoring data. Methodology and data sources · Data terms