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Air quality · São Paulo, Brazil

São José dos Campos Air Quality Index (AQI) today

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

52 Moderate

Live estimate · modelled

US EPA AQI09:00 UTC-3, 3 Nov Main pollutant: PM2.5

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

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 49.

Over the next 24 hours the model expects the AQI to range from 35 around 11:00 to 101 around 18:00 (3 Nov).

638th most polluted of 849 cities worldwide right now, 11th of 25 in Brazil.

What to do today

  • Long walk or run outside OK, lighter if very sensitive
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

10:00 · 32 11:00 · 23 12:00 · 25 13:00 · 28 14:00 · 31 15:00 · 31 16:00 · 31 17:00 · 29 18:00 · 27 19:00 · 33 20:00 · 47 21:00 · 55 22:00 · 59 23:00 · 59 00:00 · 58 01:00 · 58 02:00 · 59 03:00 · 59 04:00 · 60 05:00 · 59 06:00 · 60 07:00 · 60 08:00 · 59 09:00 · 52 10:00 · 41 11:00 · 35 12:00 · 35 13:00 · 44 14:00 · 51 15:00 · 77 16:00 · 93 17:00 · 100 18:00 · 101 19:00 · 100 20:00 · 90 21:00 · 74 22:00 · 73 23:00 · 78 00:00 · 81 01:00 · 85 02:00 · 90 03:00 · 94 04:00 · 95 05:00 · 95 06:00 · 95 07:00 · 93 08:00 · 81 09:00 · 68 10:00 · 59 11:00 · 53 12:00 · 46 13:00 · 54 14:00 · 71 15:00 · 84 16:00 · 84 17:00 · 77 18:00 · 67 19:00 · 60 20:00 · 64 21:00 · 69 22:00 · 73 23:00 · 75 00:00 · 75 01:00 · 73 02:00 · 71 03:00 · 70 04:00 · 68 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 10:0032
Mon 11:0023
Mon 12:0025
Mon 13:0028
Mon 14:0031
Mon 15:0031
Mon 16:0031
Mon 17:0029
Mon 18:0027
Mon 19:0033
Mon 20:0047
Mon 21:0055
Mon 22:0059
Mon 23:0059
Tue 00:0058
Tue 01:0058
Tue 02:0059
Tue 03:0059
Tue 04:0060
Tue 05:0059
Tue 06:0060
Tue 07:0060
Tue 08:0059
Tue 09:00 · Now52
Tue 10:00 · Forecast41
Tue 11:00 · Forecast35
Tue 12:00 · Forecast35
Tue 13:00 · Forecast44
Tue 14:00 · Forecast51
Tue 15:00 · Forecast77
Tue 16:00 · Forecast93
Tue 17:00 · Forecast100
Tue 18:00 · Forecast101
Tue 19:00 · Forecast100
Tue 20:00 · Forecast90
Tue 21:00 · Forecast74
Tue 22:00 · Forecast73
Tue 23:00 · Forecast78
Wed 00:00 · Forecast81
Wed 01:00 · Forecast85
Wed 02:00 · Forecast90
Wed 03:00 · Forecast94
Wed 04:00 · Forecast95
Wed 05:00 · Forecast95
Wed 06:00 · Forecast95
Wed 07:00 · Forecast93
Wed 08:00 · Forecast81
Wed 09:00 · Forecast68
Wed 10:00 · Forecast59
Wed 11:00 · Forecast53
Wed 12:00 · Forecast46
Wed 13:00 · Forecast54
Wed 14:00 · Forecast71
Wed 15:00 · Forecast84
Wed 16:00 · Forecast84
Wed 17:00 · Forecast77
Wed 18:00 · Forecast67
Wed 19:00 · Forecast60
Wed 20:00 · Forecast64
Wed 21:00 · Forecast69
Wed 22:00 · Forecast73
Wed 23:00 · Forecast75
Thu 00:00 · Forecast75
Thu 01:00 · Forecast73
Thu 02:00 · Forecast71
Thu 03:00 · Forecast70
Thu 04:00 · Forecast68

Pollutants this hour

  • PM2.5 6.2 µg/m³ 24-hour mean 9.0 µg/m³ · within WHO’s 24-hour guideline (15) 52
  • PM10 6 µg/m³ 8
  • O₃ 107 µg/m³ 15
  • NO₂ 5 µg/m³ 2
  • SO₂ 4 µg/m³ 1
  • CO 0.31 mg/m³ 2

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
São Paulo São Paulo 71
Campinas São Paulo 81
Sorocaba São Paulo 84
Nova Iguaçu Rio de Janeiro 58
Rio de Janeiro Rio de Janeiro 64
Ribeirão Preto São Paulo 172
Belo Horizonte Minas Gerais 46

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 São José dos Campos’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 São José dos Campos right now?
52 on the US EPA scale (Moderate) 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 São José dos Campos today?
For most people, yes. The EPA’s statement for “Moderate”: Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. General guidance, not medical advice.

Will the air in São José dos Campos get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 35 around 11:00 to 101 around 18:00 (3 Nov). Forecasts beyond a day are less certain.

How does São José dos Campos compare with other cities?
Right now it is the 638th most polluted of 849 cities we track worldwide, and 11th of 25 in Brazil, all on the same US EPA scale.

Why does another app show a different AQI for São José dos Campos?
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.