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Air quality · Trinidad and Tobago

Port of Spain Air Quality Index (AQI) today

Modelled estimate for 08:00 local time (UTC-4), refreshed 3 Nov, 07:52 UTC+0.

18 Good

Live estimate · modelled

US EPA AQI08:00 UTC-4, 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 20.

Over the next 24 hours the model expects the AQI to range from 18 around 09:00 to 30 around 08:00 (4 Nov).

842nd most polluted of 849 cities worldwide right now, 1st of 2 in Trinidad and Tobago.

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

09:00 · 15 10:00 · 16 11:00 · 18 12:00 · 19 13:00 · 20 14:00 · 21 15:00 · 22 16:00 · 23 17:00 · 23 18:00 · 23 19:00 · 23 20:00 · 22 21:00 · 22 22:00 · 22 23:00 · 22 00:00 · 22 01:00 · 22 02:00 · 22 03:00 · 21 04:00 · 19 05:00 · 19 06:00 · 18 07:00 · 18 08:00 · 18 09:00 · 18 10:00 · 19 11:00 · 19 12:00 · 20 13:00 · 22 14:00 · 24 15:00 · 26 16:00 · 28 17:00 · 29 18:00 · 29 19:00 · 28 20:00 · 27 21:00 · 27 22:00 · 26 23:00 · 27 00:00 · 27 01:00 · 27 02:00 · 28 03:00 · 28 04:00 · 28 05:00 · 28 06:00 · 28 07:00 · 29 08:00 · 30 09:00 · 31 10:00 · 31 11:00 · 32 12:00 · 34 13:00 · 34 14:00 · 37 15:00 · 39 16:00 · 40 17:00 · 39 18:00 · 37 19:00 · 33 20:00 · 29 21:00 · 26 22:00 · 24 23:00 · 24 00:00 · 24 01:00 · 25 02:00 · 26 03:00 · 27 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 09:0015
Mon 10:0016
Mon 11:0018
Mon 12:0019
Mon 13:0020
Mon 14:0021
Mon 15:0022
Mon 16:0023
Mon 17:0023
Mon 18:0023
Mon 19:0023
Mon 20:0022
Mon 21:0022
Mon 22:0022
Mon 23:0022
Tue 00:0022
Tue 01:0022
Tue 02:0022
Tue 03:0021
Tue 04:0019
Tue 05:0019
Tue 06:0018
Tue 07:0018
Tue 08:00 · Now18
Tue 09:00 · Forecast18
Tue 10:00 · Forecast19
Tue 11:00 · Forecast19
Tue 12:00 · Forecast20
Tue 13:00 · Forecast22
Tue 14:00 · Forecast24
Tue 15:00 · Forecast26
Tue 16:00 · Forecast28
Tue 17:00 · Forecast29
Tue 18:00 · Forecast29
Tue 19:00 · Forecast28
Tue 20:00 · Forecast27
Tue 21:00 · Forecast27
Tue 22:00 · Forecast26
Tue 23:00 · Forecast27
Wed 00:00 · Forecast27
Wed 01:00 · Forecast27
Wed 02:00 · Forecast28
Wed 03:00 · Forecast28
Wed 04:00 · Forecast28
Wed 05:00 · Forecast28
Wed 06:00 · Forecast28
Wed 07:00 · Forecast29
Wed 08:00 · Forecast30
Wed 09:00 · Forecast31
Wed 10:00 · Forecast31
Wed 11:00 · Forecast32
Wed 12:00 · Forecast34
Wed 13:00 · Forecast34
Wed 14:00 · Forecast37
Wed 15:00 · Forecast39
Wed 16:00 · Forecast40
Wed 17:00 · Forecast39
Wed 18:00 · Forecast37
Wed 19:00 · Forecast33
Wed 20:00 · Forecast29
Wed 21:00 · Forecast26
Wed 22:00 · Forecast24
Wed 23:00 · Forecast24
Thu 00:00 · Forecast24
Thu 01:00 · Forecast25
Thu 02:00 · Forecast26
Thu 03:00 · Forecast27

Pollutants this hour

  • PM2.5 3.2 µg/m³ 24-hour mean 3.6 µg/m³ · within WHO’s 24-hour guideline (15) 18
  • PM10 5 µg/m³ 5
  • O₃ 35 µg/m³ 16
  • NO₂ 3 µg/m³ 1
  • SO₂ 1 µg/m³ 0
  • 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
Chaguanas Chaguanas 16
Maturín Venezuela 31
Ciudad Guayana Venezuela 14
Barcelona Venezuela 56
Caracas Venezuela 56
Valencia Venezuela 57
Barquisimeto Venezuela 36

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 of Spain’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 of Spain right now?
18 on the US EPA scale (Good) at 08:00 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 of Spain 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 Port of Spain get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 18 around 09:00 to 30 around 08:00 (4 Nov). Forecasts beyond a day are less certain.

How does Port of Spain compare with other cities?
Right now it is the 842nd most polluted of 849 cities we track worldwide, and 1st of 2 in Trinidad and Tobago, all on the same US EPA scale.

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