GlobeMetrics
EN
  • English✓
  • हिंदी—
  • मराठी—

Try “Pune”, “Poona” or “पुणे”

Air quality · Bahia, Brazil

Salvador Air Quality Index (AQI) today

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

38 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 51.

Over the next 24 hours the model expects the AQI to range from 38 around 10:00 to 62 around 06:00 (4 Nov).

720th most polluted of 849 cities worldwide right now, 20th 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 · 51 11:00 · 51 12:00 · 49 13:00 · 47 14:00 · 47 15:00 · 47 16:00 · 48 17:00 · 48 18:00 · 49 19:00 · 49 20:00 · 49 21:00 · 49 22:00 · 49 23:00 · 51 00:00 · 52 01:00 · 53 02:00 · 55 03:00 · 55 04:00 · 55 05:00 · 56 06:00 · 55 07:00 · 52 08:00 · 42 09:00 · 38 10:00 · 38 11:00 · 39 12:00 · 40 13:00 · 42 14:00 · 43 15:00 · 46 16:00 · 49 17:00 · 52 18:00 · 54 19:00 · 56 20:00 · 55 21:00 · 55 22:00 · 55 23:00 · 55 00:00 · 56 01:00 · 56 02:00 · 56 03:00 · 57 04:00 · 58 05:00 · 60 06:00 · 62 07:00 · 60 08:00 · 58 09:00 · 57 10:00 · 56 11:00 · 55 12:00 · 55 13:00 · 56 14:00 · 56 15:00 · 56 16:00 · 56 17:00 · 55 18:00 · 55 19:00 · 55 20:00 · 56 21:00 · 55 22:00 · 53 23:00 · 51 00:00 · 47 01:00 · 44 02:00 · 43 03:00 · 43 04:00 · 44 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 10:0051
Mon 11:0051
Mon 12:0049
Mon 13:0047
Mon 14:0047
Mon 15:0047
Mon 16:0048
Mon 17:0048
Mon 18:0049
Mon 19:0049
Mon 20:0049
Mon 21:0049
Mon 22:0049
Mon 23:0051
Tue 00:0052
Tue 01:0053
Tue 02:0055
Tue 03:0055
Tue 04:0055
Tue 05:0056
Tue 06:0055
Tue 07:0052
Tue 08:0042
Tue 09:00 · Now38
Tue 10:00 · Forecast38
Tue 11:00 · Forecast39
Tue 12:00 · Forecast40
Tue 13:00 · Forecast42
Tue 14:00 · Forecast43
Tue 15:00 · Forecast46
Tue 16:00 · Forecast49
Tue 17:00 · Forecast52
Tue 18:00 · Forecast54
Tue 19:00 · Forecast56
Tue 20:00 · Forecast55
Tue 21:00 · Forecast55
Tue 22:00 · Forecast55
Tue 23:00 · Forecast55
Wed 00:00 · Forecast56
Wed 01:00 · Forecast56
Wed 02:00 · Forecast56
Wed 03:00 · Forecast57
Wed 04:00 · Forecast58
Wed 05:00 · Forecast60
Wed 06:00 · Forecast62
Wed 07:00 · Forecast60
Wed 08:00 · Forecast58
Wed 09:00 · Forecast57
Wed 10:00 · Forecast56
Wed 11:00 · Forecast55
Wed 12:00 · Forecast55
Wed 13:00 · Forecast56
Wed 14:00 · Forecast56
Wed 15:00 · Forecast56
Wed 16:00 · Forecast56
Wed 17:00 · Forecast55
Wed 18:00 · Forecast55
Wed 19:00 · Forecast55
Wed 20:00 · Forecast56
Wed 21:00 · Forecast55
Wed 22:00 · Forecast53
Wed 23:00 · Forecast51
Thu 00:00 · Forecast47
Thu 01:00 · Forecast44
Thu 02:00 · Forecast43
Thu 03:00 · Forecast43
Thu 04:00 · Forecast44

Pollutants this hour

  • PM2.5 6.1 µg/m³ 24-hour mean 9.3 µg/m³ · within WHO’s 24-hour guideline (15) 38
  • PM10 8 µg/m³ 7
  • O₃ 60 µg/m³ 15
  • NO₂ 3 µg/m³ 1
  • SO₂ 3 µg/m³ 1
  • CO 0.16 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
Aracaju Sergipe 41
Maceió Alagoas 52
Recife Pernambuco 52
João Pessoa Paraíba 51
Natal Rio Grande do Norte 46
Belo Horizonte Minas Gerais 46
Teresina Piauí 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 Salvador’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 Salvador right now?
38 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 Salvador 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 Salvador get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 38 around 10:00 to 62 around 06:00 (4 Nov). Forecasts beyond a day are less certain.

How does Salvador compare with other cities?
Right now it is the 720th most polluted of 849 cities we track worldwide, and 20th of 25 in Brazil, all on the same US EPA scale.

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