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Air quality · Federal District, Brazil

Brasília Air Quality Index (AQI) today

Modelled estimate for 10:00 local time (UTC-3), refreshed 3 Nov, 07:52 UTC+0.

30 Good

Live estimate · modelled

US EPA AQI10:00 UTC-3, 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 29.

Over the next 24 hours the model expects the AQI to range from 31 around 11:00 to 70 around 05:00 (4 Nov).

780th most polluted of 849 cities worldwide right now, 22nd of 25 in Brazil.

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

11:00 · 31 12:00 · 34 13:00 · 38 14:00 · 43 15:00 · 44 16:00 · 45 17:00 · 44 18:00 · 44 19:00 · 41 20:00 · 38 21:00 · 52 22:00 · 58 23:00 · 62 00:00 · 62 01:00 · 55 02:00 · 43 03:00 · 29 04:00 · 22 05:00 · 19 06:00 · 19 07:00 · 20 08:00 · 22 09:00 · 27 10:00 · 30 11:00 · 31 12:00 · 34 13:00 · 38 14:00 · 41 15:00 · 44 16:00 · 44 17:00 · 44 18:00 · 43 19:00 · 41 20:00 · 43 21:00 · 48 22:00 · 52 23:00 · 55 00:00 · 58 01:00 · 62 02:00 · 65 03:00 · 67 04:00 · 69 05:00 · 70 06:00 · 70 07:00 · 70 08:00 · 69 09:00 · 63 10:00 · 55 11:00 · 51 12:00 · 42 13:00 · 40 14:00 · 44 15:00 · 46 16:00 · 46 17:00 · 44 18:00 · 41 19:00 · 48 20:00 · 54 21:00 · 58 22:00 · 62 23:00 · 67 00:00 · 72 01:00 · 75 02:00 · 78 03:00 · 80 04:00 · 81 Now

US EPA AQI per hour, UTC-3. 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 11:0031
Mon 12:0034
Mon 13:0038
Mon 14:0043
Mon 15:0044
Mon 16:0045
Mon 17:0044
Mon 18:0044
Mon 19:0041
Mon 20:0038
Mon 21:0052
Mon 22:0058
Mon 23:0062
Tue 00:0062
Tue 01:0055
Tue 02:0043
Tue 03:0029
Tue 04:0022
Tue 05:0019
Tue 06:0019
Tue 07:0020
Tue 08:0022
Tue 09:0027
Tue 10:00 · Now30
Tue 11:00 · Forecast31
Tue 12:00 · Forecast34
Tue 13:00 · Forecast38
Tue 14:00 · Forecast41
Tue 15:00 · Forecast44
Tue 16:00 · Forecast44
Tue 17:00 · Forecast44
Tue 18:00 · Forecast43
Tue 19:00 · Forecast41
Tue 20:00 · Forecast43
Tue 21:00 · Forecast48
Tue 22:00 · Forecast52
Tue 23:00 · Forecast55
Wed 00:00 · Forecast58
Wed 01:00 · Forecast62
Wed 02:00 · Forecast65
Wed 03:00 · Forecast67
Wed 04:00 · Forecast69
Wed 05:00 · Forecast70
Wed 06:00 · Forecast70
Wed 07:00 · Forecast70
Wed 08:00 · Forecast69
Wed 09:00 · Forecast63
Wed 10:00 · Forecast55
Wed 11:00 · Forecast51
Wed 12:00 · Forecast42
Wed 13:00 · Forecast40
Wed 14:00 · Forecast44
Wed 15:00 · Forecast46
Wed 16:00 · Forecast46
Wed 17:00 · Forecast44
Wed 18:00 · Forecast41
Wed 19:00 · Forecast48
Wed 20:00 · Forecast54
Wed 21:00 · Forecast58
Wed 22:00 · Forecast62
Wed 23:00 · Forecast67
Thu 00:00 · Forecast72
Thu 01:00 · Forecast75
Thu 02:00 · Forecast78
Thu 03:00 · Forecast80
Thu 04:00 · Forecast81

Pollutants this hour

  • PM2.5 5.0 µg/m³ 24-hour mean 5.4 µg/m³ · within WHO’s 24-hour guideline (15) 24
  • PM10 6 µg/m³ 5
  • O₃ 97 µg/m³ 30
  • NO₂ 2 µg/m³ 1
  • SO₂ 1 µg/m³ 0
  • CO 0.19 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
Goiânia Goiás 30
Uberlândia Minas Gerais 26
Ribeirão Preto São Paulo 146
Belo Horizonte Minas Gerais 41
Campinas São Paulo 73
São José dos Campos São Paulo 41
Sorocaba São Paulo 71

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 Brasília’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 Brasília right now?
30 on the US EPA scale (Good) at 10:00 UTC-3, 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 Brasília 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 Brasília get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 31 around 11:00 to 70 around 05:00 (4 Nov). Forecasts beyond a day are less certain.

How does Brasília compare with other cities?
Right now it is the 780th most polluted of 849 cities we track worldwide, and 22nd of 25 in Brazil, all on the same US EPA scale.

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