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Air quality · South Australia, Australia

Adelaide Air Quality Index (AQI) today

Modelled estimate for 23:30 local time (UTC+10:30), refreshed 3 Nov, 07:52 UTC+0.

34 Good

Live estimate · modelled

US EPA AQI23:30 UTC+10:30, 3 Nov Main pollutant: PM2.5

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 42.

Over the next 24 hours the model expects the AQI to range from 24 around 05:30 to 56 around 18:30 (4 Nov).

751st most polluted of 849 cities worldwide right now, 4th of 7 in Australia.

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

00:30 · 38 01:30 · 40 02:30 · 42 03:30 · 43 04:30 · 45 05:30 · 47 06:30 · 48 07:30 · 49 08:30 · 49 09:30 · 47 10:30 · 47 11:30 · 47 12:30 · 47 13:30 · 46 14:30 · 45 15:30 · 44 16:30 · 43 17:30 · 41 18:30 · 39 19:30 · 39 20:30 · 39 21:30 · 38 22:30 · 37 23:30 · 34 00:30 · 33 01:30 · 30 02:30 · 28 03:30 · 27 04:30 · 26 05:30 · 24 06:30 · 25 07:30 · 25 08:30 · 24 09:30 · 24 10:30 · 24 11:30 · 24 12:30 · 26 13:30 · 38 14:30 · 48 15:30 · 53 16:30 · 54 17:30 · 55 18:30 · 56 19:30 · 56 20:30 · 55 21:30 · 55 22:30 · 55 23:30 · 55 00:30 · 55 01:30 · 55 02:30 · 55 03:30 · 56 04:30 · 56 05:30 · 56 06:30 · 57 07:30 · 58 08:30 · 58 09:30 · 57 10:30 · 57 11:30 · 55 12:30 · 55 13:30 · 54 14:30 · 53 15:30 · 52 16:30 · 52 17:30 · 52 Now

US EPA AQI per hour, UTC+10:30. 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
Tue 00:3038
Tue 01:3040
Tue 02:3042
Tue 03:3043
Tue 04:3045
Tue 05:3047
Tue 06:3048
Tue 07:3049
Tue 08:3049
Tue 09:3047
Tue 10:3047
Tue 11:3047
Tue 12:3047
Tue 13:3046
Tue 14:3045
Tue 15:3044
Tue 16:3043
Tue 17:3041
Tue 18:3039
Tue 19:3039
Tue 20:3039
Tue 21:3038
Tue 22:3037
Tue 23:30 · Now34
Wed 00:30 · Forecast33
Wed 01:30 · Forecast30
Wed 02:30 · Forecast28
Wed 03:30 · Forecast27
Wed 04:30 · Forecast26
Wed 05:30 · Forecast24
Wed 06:30 · Forecast25
Wed 07:30 · Forecast25
Wed 08:30 · Forecast24
Wed 09:30 · Forecast24
Wed 10:30 · Forecast24
Wed 11:30 · Forecast24
Wed 12:30 · Forecast26
Wed 13:30 · Forecast38
Wed 14:30 · Forecast48
Wed 15:30 · Forecast53
Wed 16:30 · Forecast54
Wed 17:30 · Forecast55
Wed 18:30 · Forecast56
Wed 19:30 · Forecast56
Wed 20:30 · Forecast55
Wed 21:30 · Forecast55
Wed 22:30 · Forecast55
Wed 23:30 · Forecast55
Thu 00:30 · Forecast55
Thu 01:30 · Forecast55
Thu 02:30 · Forecast55
Thu 03:30 · Forecast56
Thu 04:30 · Forecast56
Thu 05:30 · Forecast56
Thu 06:30 · Forecast57
Thu 07:30 · Forecast58
Thu 08:30 · Forecast58
Thu 09:30 · Forecast57
Thu 10:30 · Forecast57
Thu 11:30 · Forecast55
Thu 12:30 · Forecast55
Thu 13:30 · Forecast54
Thu 14:30 · Forecast53
Thu 15:30 · Forecast52
Thu 16:30 · Forecast52
Thu 17:30 · Forecast52

Pollutants this hour

  • PM2.5 5.6 µg/m³ 24-hour mean 7.7 µg/m³ · within WHO’s 24-hour guideline (15) 34
  • PM10 7 µg/m³ 6
  • O₃ 38 µg/m³ 21
  • NO₂ 10 µg/m³ 5
  • 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
Melbourne Victoria 61
Canberra Australian Capital Territory 26
Sydney New South Wales 56
Brisbane Queensland 29
Gold Coast Queensland 31
Perth Western Australia 51
Port Moresby Papua New Guinea 40

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 Adelaide’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 Adelaide right now?
34 on the US EPA scale (Good) at 23:30 UTC+10:30, 3 Nov. PM2.5 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 Adelaide 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 Adelaide get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 24 around 05:30 to 56 around 18:30 (4 Nov). Forecasts beyond a day are less certain.

How does Adelaide compare with other cities?
Right now it is the 751st most polluted of 849 cities we track worldwide, and 4th of 7 in Australia, all on the same US EPA scale.

Why does another app show a different AQI for Adelaide?
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.