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Air quality · Trinidad and Tobago

Chaguanas Air Quality Index (AQI) today

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

16 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 17.

Over the next 24 hours the model expects the AQI to range from 17 around 09:00 to 35 around 18:00 (3 Nov).

846th most polluted of 849 cities worldwide right now, 2nd 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 · 14 10:00 · 15 11:00 · 17 12:00 · 19 13:00 · 20 14:00 · 21 15:00 · 23 16:00 · 23 17:00 · 24 18:00 · 23 19:00 · 21 20:00 · 19 21:00 · 19 22:00 · 18 23:00 · 19 00:00 · 19 01:00 · 19 02:00 · 19 03:00 · 18 04:00 · 18 05:00 · 17 06:00 · 17 07:00 · 17 08:00 · 16 09:00 · 17 10:00 · 17 11:00 · 17 12:00 · 18 13:00 · 22 14:00 · 26 15:00 · 29 16:00 · 32 17:00 · 34 18:00 · 35 19:00 · 34 20:00 · 32 21:00 · 30 22:00 · 29 23:00 · 30 00:00 · 31 01:00 · 31 02:00 · 31 03:00 · 31 04:00 · 31 05:00 · 31 06:00 · 31 07:00 · 31 08:00 · 32 09:00 · 33 10:00 · 35 11:00 · 37 12:00 · 38 13:00 · 39 14:00 · 42 15:00 · 47 16:00 · 51 17:00 · 51 18:00 · 47 19:00 · 41 20:00 · 32 21:00 · 27 22:00 · 24 23:00 · 23 00:00 · 23 01:00 · 23 02:00 · 24 03:00 · 25 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 09:0014
Mon 10:0015
Mon 11:0017
Mon 12:0019
Mon 13:0020
Mon 14:0021
Mon 15:0023
Mon 16:0023
Mon 17:0024
Mon 18:0023
Mon 19:0021
Mon 20:0019
Mon 21:0019
Mon 22:0018
Mon 23:0019
Tue 00:0019
Tue 01:0019
Tue 02:0019
Tue 03:0018
Tue 04:0018
Tue 05:0017
Tue 06:0017
Tue 07:0017
Tue 08:00 · Now16
Tue 09:00 · Forecast17
Tue 10:00 · Forecast17
Tue 11:00 · Forecast17
Tue 12:00 · Forecast18
Tue 13:00 · Forecast22
Tue 14:00 · Forecast26
Tue 15:00 · Forecast29
Tue 16:00 · Forecast32
Tue 17:00 · Forecast34
Tue 18:00 · Forecast35
Tue 19:00 · Forecast34
Tue 20:00 · Forecast32
Tue 21:00 · Forecast30
Tue 22:00 · Forecast29
Tue 23:00 · Forecast30
Wed 00:00 · Forecast31
Wed 01:00 · Forecast31
Wed 02:00 · Forecast31
Wed 03:00 · Forecast31
Wed 04:00 · Forecast31
Wed 05:00 · Forecast31
Wed 06:00 · Forecast31
Wed 07:00 · Forecast31
Wed 08:00 · Forecast32
Wed 09:00 · Forecast33
Wed 10:00 · Forecast35
Wed 11:00 · Forecast37
Wed 12:00 · Forecast38
Wed 13:00 · Forecast39
Wed 14:00 · Forecast42
Wed 15:00 · Forecast47
Wed 16:00 · Forecast51
Wed 17:00 · Forecast51
Wed 18:00 · Forecast47
Wed 19:00 · Forecast41
Wed 20:00 · Forecast32
Wed 21:00 · Forecast27
Wed 22:00 · Forecast24
Wed 23:00 · Forecast23
Thu 00:00 · Forecast23
Thu 01:00 · Forecast23
Thu 02:00 · Forecast24
Thu 03:00 · Forecast25

Pollutants this hour

  • PM2.5 2.8 µg/m³ 24-hour mean 3.2 µg/m³ · within WHO’s 24-hour guideline (15) 16
  • PM10 4 µg/m³ 4
  • O₃ 32 µg/m³ 15
  • NO₂ 4 µg/m³ 2
  • SO₂ 1 µg/m³ 0
  • CO 0.15 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
Port of Spain Port of Spain 18
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 Chaguanas’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 Chaguanas right now?
16 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 Chaguanas 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 Chaguanas get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 17 around 09:00 to 35 around 18:00 (3 Nov). Forecasts beyond a day are less certain.

How does Chaguanas compare with other cities?
Right now it is the 846th most polluted of 849 cities we track worldwide, and 2nd of 2 in Trinidad and Tobago, all on the same US EPA scale.

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