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Air quality · Santa Fe, Argentina

Rosario Air Quality Index (AQI) today

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

32 Good

Live estimate · modelled

US EPA AQI09:00 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 52.

Over the next 24 hours the model expects the AQI to range from 28 around 23:00 to 56 around 09:00 (4 Nov).

765th most polluted of 849 cities worldwide right now, 3rd of 3 in Argentina.

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 · 59 11:00 · 58 12:00 · 58 13:00 · 59 14:00 · 59 15:00 · 59 16:00 · 59 17:00 · 58 18:00 · 58 19:00 · 58 20:00 · 58 21:00 · 58 22:00 · 58 23:00 · 55 00:00 · 51 01:00 · 42 02:00 · 38 03:00 · 36 04:00 · 36 05:00 · 35 06:00 · 33 07:00 · 32 08:00 · 33 09:00 · 32 10:00 · 36 11:00 · 37 12:00 · 37 13:00 · 36 14:00 · 35 15:00 · 36 16:00 · 37 17:00 · 38 18:00 · 38 19:00 · 36 20:00 · 34 21:00 · 31 22:00 · 30 23:00 · 28 00:00 · 28 01:00 · 29 02:00 · 30 03:00 · 32 04:00 · 33 05:00 · 35 06:00 · 41 07:00 · 51 08:00 · 55 09:00 · 56 10:00 · 52 11:00 · 45 12:00 · 37 13:00 · 29 14:00 · 31 15:00 · 34 16:00 · 37 17:00 · 39 18:00 · 39 19:00 · 37 20:00 · 33 21:00 · 31 22:00 · 27 23:00 · 28 00:00 · 32 01:00 · 36 02:00 · 42 03:00 · 48 04:00 · 52 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 10:0059
Mon 11:0058
Mon 12:0058
Mon 13:0059
Mon 14:0059
Mon 15:0059
Mon 16:0059
Mon 17:0058
Mon 18:0058
Mon 19:0058
Mon 20:0058
Mon 21:0058
Mon 22:0058
Mon 23:0055
Tue 00:0051
Tue 01:0042
Tue 02:0038
Tue 03:0036
Tue 04:0036
Tue 05:0035
Tue 06:0033
Tue 07:0032
Tue 08:0033
Tue 09:00 · Now32
Tue 10:00 · Forecast36
Tue 11:00 · Forecast37
Tue 12:00 · Forecast37
Tue 13:00 · Forecast36
Tue 14:00 · Forecast35
Tue 15:00 · Forecast36
Tue 16:00 · Forecast37
Tue 17:00 · Forecast38
Tue 18:00 · Forecast38
Tue 19:00 · Forecast36
Tue 20:00 · Forecast34
Tue 21:00 · Forecast31
Tue 22:00 · Forecast30
Tue 23:00 · Forecast28
Wed 00:00 · Forecast28
Wed 01:00 · Forecast29
Wed 02:00 · Forecast30
Wed 03:00 · Forecast32
Wed 04:00 · Forecast33
Wed 05:00 · Forecast35
Wed 06:00 · Forecast41
Wed 07:00 · Forecast51
Wed 08:00 · Forecast55
Wed 09:00 · Forecast56
Wed 10:00 · Forecast52
Wed 11:00 · Forecast45
Wed 12:00 · Forecast37
Wed 13:00 · Forecast29
Wed 14:00 · Forecast31
Wed 15:00 · Forecast34
Wed 16:00 · Forecast37
Wed 17:00 · Forecast39
Wed 18:00 · Forecast39
Wed 19:00 · Forecast37
Wed 20:00 · Forecast33
Wed 21:00 · Forecast31
Wed 22:00 · Forecast27
Wed 23:00 · Forecast28
Thu 00:00 · Forecast32
Thu 01:00 · Forecast36
Thu 02:00 · Forecast42
Thu 03:00 · Forecast48
Thu 04:00 · Forecast52

Pollutants this hour

  • PM2.5 5.7 µg/m³ 24-hour mean 9.9 µg/m³ · within WHO’s 24-hour guideline (15) 31
  • PM10 6 µg/m³ 6
  • O₃ 56 µg/m³ 32
  • NO₂ 7 µg/m³ 3
  • SO₂ 2 µg/m³ 0
  • CO 0.17 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
Buenos Aires Buenos Aires F.D. 64
Córdoba Cordoba 78
Montevideo Uruguay 44
Asunción Paraguay 22
Santiago Chile 82
Porto Alegre Brazil 51
Curitiba Brazil 57

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 Rosario’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 Rosario right now?
32 on the US EPA scale (Good) at 09:00 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 Rosario 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 Rosario get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 28 around 23:00 to 56 around 09:00 (4 Nov). Forecasts beyond a day are less certain.

How does Rosario compare with other cities?
Right now it is the 765th most polluted of 849 cities we track worldwide, and 3rd of 3 in Argentina, all on the same US EPA scale.

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