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Air quality · Minas Gerais, Brazil

Belo Horizonte Air Quality Index (AQI) today

Modelled estimate for 09:00 local time (UTC-3), refreshed 3 Nov, 07:52 UTC+0.

46 Good

Live estimate · modelled

US EPA AQI09:00 UTC-3, 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 44.

Over the next 24 hours the model expects the AQI to range from 37 around 12:00 to 64 around 08:00 (4 Nov).

672nd most polluted of 849 cities worldwide right now, 15th 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

10:00 · 24 11:00 · 27 12:00 · 32 13:00 · 37 14:00 · 42 15:00 · 46 16:00 · 48 17:00 · 49 18:00 · 48 19:00 · 52 20:00 · 47 21:00 · 41 22:00 · 41 23:00 · 44 00:00 · 45 01:00 · 45 02:00 · 47 03:00 · 48 04:00 · 50 05:00 · 52 06:00 · 53 07:00 · 55 08:00 · 52 09:00 · 46 10:00 · 41 11:00 · 38 12:00 · 37 13:00 · 43 14:00 · 48 15:00 · 54 16:00 · 58 17:00 · 54 18:00 · 49 19:00 · 45 20:00 · 52 21:00 · 54 22:00 · 53 23:00 · 48 00:00 · 46 01:00 · 49 02:00 · 52 03:00 · 53 04:00 · 55 05:00 · 56 06:00 · 58 07:00 · 61 08:00 · 64 09:00 · 59 10:00 · 54 11:00 · 51 12:00 · 48 13:00 · 64 14:00 · 87 15:00 · 101 16:00 · 105 17:00 · 100 18:00 · 87 19:00 · 67 20:00 · 64 21:00 · 71 22:00 · 76 23:00 · 79 00:00 · 80 01:00 · 80 02:00 · 80 03:00 · 79 04:00 · 77 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 10:0024
Mon 11:0027
Mon 12:0032
Mon 13:0037
Mon 14:0042
Mon 15:0046
Mon 16:0048
Mon 17:0049
Mon 18:0048
Mon 19:0052
Mon 20:0047
Mon 21:0041
Mon 22:0041
Mon 23:0044
Tue 00:0045
Tue 01:0045
Tue 02:0047
Tue 03:0048
Tue 04:0050
Tue 05:0052
Tue 06:0053
Tue 07:0055
Tue 08:0052
Tue 09:00 · Now46
Tue 10:00 · Forecast41
Tue 11:00 · Forecast38
Tue 12:00 · Forecast37
Tue 13:00 · Forecast43
Tue 14:00 · Forecast48
Tue 15:00 · Forecast54
Tue 16:00 · Forecast58
Tue 17:00 · Forecast54
Tue 18:00 · Forecast49
Tue 19:00 · Forecast45
Tue 20:00 · Forecast52
Tue 21:00 · Forecast54
Tue 22:00 · Forecast53
Tue 23:00 · Forecast48
Wed 00:00 · Forecast46
Wed 01:00 · Forecast49
Wed 02:00 · Forecast52
Wed 03:00 · Forecast53
Wed 04:00 · Forecast55
Wed 05:00 · Forecast56
Wed 06:00 · Forecast58
Wed 07:00 · Forecast61
Wed 08:00 · Forecast64
Wed 09:00 · Forecast59
Wed 10:00 · Forecast54
Wed 11:00 · Forecast51
Wed 12:00 · Forecast48
Wed 13:00 · Forecast64
Wed 14:00 · Forecast87
Wed 15:00 · Forecast101
Wed 16:00 · Forecast105
Wed 17:00 · Forecast100
Wed 18:00 · Forecast87
Wed 19:00 · Forecast67
Wed 20:00 · Forecast64
Wed 21:00 · Forecast71
Wed 22:00 · Forecast76
Wed 23:00 · Forecast79
Thu 00:00 · Forecast80
Thu 01:00 · Forecast80
Thu 02:00 · Forecast80
Thu 03:00 · Forecast79
Thu 04:00 · Forecast77

Pollutants this hour

  • PM2.5 6.5 µg/m³ 24-hour mean 7.9 µg/m³ · within WHO’s 24-hour guideline (15) 46
  • PM10 7 µg/m³ 7
  • O₃ 98 µg/m³ 19
  • NO₂ 5 µg/m³ 2
  • SO₂ 6 µg/m³ 3
  • CO 0.20 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
Nova Iguaçu Rio de Janeiro 58
Rio de Janeiro Rio de Janeiro 64
São José dos Campos São Paulo 52
Ribeirão Preto São Paulo 172
Campinas São Paulo 81
Uberlândia Minas Gerais 23
São Paulo 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 Belo Horizonte’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 Belo Horizonte right now?
46 on the US EPA scale (Good) at 09:00 UTC-3, 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 Belo Horizonte 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 Belo Horizonte get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 37 around 12:00 to 64 around 08:00 (4 Nov). Forecasts beyond a day are less certain.

How does Belo Horizonte compare with other cities?
Right now it is the 672nd most polluted of 849 cities we track worldwide, and 15th of 25 in Brazil, all on the same US EPA scale.

Why does another app show a different AQI for Belo Horizonte?
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.