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Air quality · São Paulo, Brazil

Sorocaba Air Quality Index (AQI) today

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

84 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 72.

Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 103 around 08:00 (4 Nov).

278th most polluted of 849 cities worldwide right now, 3rd 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 · 55 11:00 · 49 12:00 · 43 13:00 · 37 14:00 · 33 15:00 · 32 16:00 · 31 17:00 · 33 18:00 · 42 19:00 · 54 20:00 · 61 21:00 · 63 22:00 · 67 23:00 · 74 00:00 · 82 01:00 · 88 02:00 · 93 03:00 · 98 04:00 · 102 05:00 · 105 06:00 · 108 07:00 · 104 08:00 · 99 09:00 · 84 10:00 · 71 11:00 · 63 12:00 · 59 13:00 · 55 14:00 · 52 15:00 · 64 16:00 · 74 17:00 · 74 18:00 · 64 19:00 · 63 20:00 · 71 21:00 · 71 22:00 · 64 23:00 · 58 00:00 · 54 01:00 · 53 02:00 · 55 03:00 · 59 04:00 · 66 05:00 · 76 06:00 · 86 07:00 · 94 08:00 · 103 09:00 · 102 10:00 · 93 11:00 · 86 12:00 · 80 13:00 · 105 14:00 · 136 15:00 · 151 16:00 · 151 17:00 · 140 18:00 · 119 19:00 · 97 20:00 · 80 21:00 · 86 22:00 · 92 23:00 · 97 00:00 · 101 01:00 · 106 02:00 · 112 03:00 · 116 04:00 · 120 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 10:0055
Mon 11:0049
Mon 12:0043
Mon 13:0037
Mon 14:0033
Mon 15:0032
Mon 16:0031
Mon 17:0033
Mon 18:0042
Mon 19:0054
Mon 20:0061
Mon 21:0063
Mon 22:0067
Mon 23:0074
Tue 00:0082
Tue 01:0088
Tue 02:0093
Tue 03:0098
Tue 04:00102
Tue 05:00105
Tue 06:00108
Tue 07:00104
Tue 08:0099
Tue 09:00 · Now84
Tue 10:00 · Forecast71
Tue 11:00 · Forecast63
Tue 12:00 · Forecast59
Tue 13:00 · Forecast55
Tue 14:00 · Forecast52
Tue 15:00 · Forecast64
Tue 16:00 · Forecast74
Tue 17:00 · Forecast74
Tue 18:00 · Forecast64
Tue 19:00 · Forecast63
Tue 20:00 · Forecast71
Tue 21:00 · Forecast71
Tue 22:00 · Forecast64
Tue 23:00 · Forecast58
Wed 00:00 · Forecast54
Wed 01:00 · Forecast53
Wed 02:00 · Forecast55
Wed 03:00 · Forecast59
Wed 04:00 · Forecast66
Wed 05:00 · Forecast76
Wed 06:00 · Forecast86
Wed 07:00 · Forecast94
Wed 08:00 · Forecast103
Wed 09:00 · Forecast102
Wed 10:00 · Forecast93
Wed 11:00 · Forecast86
Wed 12:00 · Forecast80
Wed 13:00 · Forecast105
Wed 14:00 · Forecast136
Wed 15:00 · Forecast151
Wed 16:00 · Forecast151
Wed 17:00 · Forecast140
Wed 18:00 · Forecast119
Wed 19:00 · Forecast97
Wed 20:00 · Forecast80
Wed 21:00 · Forecast86
Wed 22:00 · Forecast92
Wed 23:00 · Forecast97
Thu 00:00 · Forecast101
Thu 01:00 · Forecast106
Thu 02:00 · Forecast112
Thu 03:00 · Forecast116
Thu 04:00 · Forecast120

Pollutants this hour

  • PM2.5 19.3 µg/m³ 24-hour mean 20.4 µg/m³ · 1.4× WHO’s 24-hour guideline (15) 84
  • PM10 20 µg/m³ 25
  • O₃ 90 µg/m³ 12
  • NO₂ 7 µg/m³ 3
  • SO₂ 4 µg/m³ 1
  • CO 0.46 mg/m³ 5

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
Campinas São Paulo 81
São Paulo São Paulo 71
São José dos Campos São Paulo 52
Ribeirão Preto São Paulo 172
Curitiba Paraná 57
Nova Iguaçu Rio de Janeiro 58
Rio de Janeiro Rio de Janeiro 64

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 Sorocaba’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 Sorocaba right now?
84 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 Sorocaba 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 Sorocaba get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 103 around 08:00 (4 Nov). Forecasts beyond a day are less certain.

How does Sorocaba compare with other cities?
Right now it is the 278th most polluted of 849 cities we track worldwide, and 3rd of 25 in Brazil, all on the same US EPA scale.

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