GlobeMetrics
EN
  • English✓
  • हिंदी—
  • मराठी—

Try “Pune”, “Poona” or “पुणे”

Air quality · Mauritius

Port Louis Air Quality Index (AQI) today

Modelled estimate for 17:00 local time (UTC+4), refreshed 3 Nov, 07:52 UTC+0.

56 Moderate

Live estimate · modelled

US EPA AQI17:00 UTC+4, 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 58.

Over the next 24 hours the model expects the AQI to range from 42 around 03:00 to 56 around 18:00 (3 Nov).

557th most polluted of 849 cities worldwide right now.

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

18:00 · 61 19:00 · 60 20:00 · 60 21:00 · 60 22:00 · 59 23:00 · 59 00:00 · 59 01:00 · 59 02:00 · 59 03:00 · 58 04:00 · 58 05:00 · 58 06:00 · 58 07:00 · 58 08:00 · 58 09:00 · 58 10:00 · 58 11:00 · 58 12:00 · 57 13:00 · 57 14:00 · 57 15:00 · 57 16:00 · 57 17:00 · 56 18:00 · 56 19:00 · 55 20:00 · 54 21:00 · 54 22:00 · 53 23:00 · 52 00:00 · 51 01:00 · 47 02:00 · 44 03:00 · 42 04:00 · 42 05:00 · 42 06:00 · 43 07:00 · 42 08:00 · 42 09:00 · 42 10:00 · 43 11:00 · 43 12:00 · 43 13:00 · 43 14:00 · 44 15:00 · 44 16:00 · 46 17:00 · 48 18:00 · 51 19:00 · 52 20:00 · 54 21:00 · 54 22:00 · 55 23:00 · 54 00:00 · 53 01:00 · 52 02:00 · 52 03:00 · 51 04:00 · 50 05:00 · 48 06:00 · 48 07:00 · 48 08:00 · 48 09:00 · 48 10:00 · 46 11:00 · 44 Now

US EPA AQI per hour, UTC+4. 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 18:0061
Mon 19:0060
Mon 20:0060
Mon 21:0060
Mon 22:0059
Mon 23:0059
Tue 00:0059
Tue 01:0059
Tue 02:0059
Tue 03:0058
Tue 04:0058
Tue 05:0058
Tue 06:0058
Tue 07:0058
Tue 08:0058
Tue 09:0058
Tue 10:0058
Tue 11:0058
Tue 12:0057
Tue 13:0057
Tue 14:0057
Tue 15:0057
Tue 16:0057
Tue 17:00 · Now56
Tue 18:00 · Forecast56
Tue 19:00 · Forecast55
Tue 20:00 · Forecast54
Tue 21:00 · Forecast54
Tue 22:00 · Forecast53
Tue 23:00 · Forecast52
Wed 00:00 · Forecast51
Wed 01:00 · Forecast47
Wed 02:00 · Forecast44
Wed 03:00 · Forecast42
Wed 04:00 · Forecast42
Wed 05:00 · Forecast42
Wed 06:00 · Forecast43
Wed 07:00 · Forecast42
Wed 08:00 · Forecast42
Wed 09:00 · Forecast42
Wed 10:00 · Forecast43
Wed 11:00 · Forecast43
Wed 12:00 · Forecast43
Wed 13:00 · Forecast43
Wed 14:00 · Forecast44
Wed 15:00 · Forecast44
Wed 16:00 · Forecast46
Wed 17:00 · Forecast48
Wed 18:00 · Forecast51
Wed 19:00 · Forecast52
Wed 20:00 · Forecast54
Wed 21:00 · Forecast54
Wed 22:00 · Forecast55
Wed 23:00 · Forecast54
Thu 00:00 · Forecast53
Thu 01:00 · Forecast52
Thu 02:00 · Forecast52
Thu 03:00 · Forecast51
Thu 04:00 · Forecast50
Thu 05:00 · Forecast48
Thu 06:00 · Forecast48
Thu 07:00 · Forecast48
Thu 08:00 · Forecast48
Thu 09:00 · Forecast48
Thu 10:00 · Forecast46
Thu 11:00 · Forecast44

Pollutants this hour

  • PM2.5 11.4 µg/m³ 24-hour mean 12.7 µg/m³ · within WHO’s 24-hour guideline (15) 56
  • PM10 18 µg/m³ 18
  • O₃ 54 µg/m³ 27
  • NO₂ 2 µg/m³ 1
  • SO₂ 4 µg/m³ 1
  • CO 0.16 mg/m³ 0

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
Antananarivo Madagascar 36
Nampula Mozambique 52
Beira Mozambique 51
Blantyre Malawi 54
Dar es Salaam Tanzania 51
Zanzibar Tanzania 39
Lilongwe Malawi 60

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 Port Louis’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 Port Louis right now?
56 on the US EPA scale (Moderate) at 17:00 UTC+4, 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 Port Louis 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 Port Louis get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 42 around 03:00 to 56 around 18:00 (3 Nov). Forecasts beyond a day are less certain.

How does Port Louis compare with other cities?
Right now it is the 557th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

Why does another app show a different AQI for Port Louis?
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.