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Air quality · Dili Municipality, Timor Leste

Dili Air Quality Index (AQI) today

Modelled estimate for 21:00 local time (UTC+9), refreshed 3 Nov, 07:52 UTC+0.

49 Good

Live estimate · modelled

US EPA AQI21:00 UTC+9, 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 46.

Over the next 24 hours the model expects the AQI to range from 52 around 22:00 to 80 around 15:00 (4 Nov).

658th most polluted of 849 cities worldwide right now.

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

22:00 · 55 23:00 · 52 00:00 · 51 01:00 · 49 02:00 · 49 03:00 · 47 04:00 · 47 05:00 · 47 06:00 · 47 07:00 · 46 08:00 · 44 09:00 · 45 10:00 · 44 11:00 · 44 12:00 · 44 13:00 · 44 14:00 · 44 15:00 · 44 16:00 · 44 17:00 · 45 18:00 · 45 19:00 · 46 20:00 · 47 21:00 · 49 22:00 · 52 23:00 · 54 00:00 · 56 01:00 · 59 02:00 · 62 03:00 · 64 04:00 · 65 05:00 · 66 06:00 · 68 07:00 · 69 08:00 · 73 09:00 · 75 10:00 · 76 11:00 · 77 12:00 · 77 13:00 · 78 14:00 · 79 15:00 · 80 16:00 · 80 17:00 · 80 18:00 · 80 19:00 · 80 20:00 · 80 21:00 · 80 22:00 · 79 23:00 · 78 00:00 · 77 01:00 · 76 02:00 · 74 03:00 · 72 04:00 · 70 05:00 · 68 06:00 · 65 07:00 · 63 08:00 · 62 09:00 · 60 10:00 · 58 11:00 · 56 12:00 · 55 13:00 · 53 14:00 · 52 15:00 · 51 16:00 · 51 Now

US EPA AQI per hour, UTC+9. 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 22:0055
Mon 23:0052
Tue 00:0051
Tue 01:0049
Tue 02:0049
Tue 03:0047
Tue 04:0047
Tue 05:0047
Tue 06:0047
Tue 07:0046
Tue 08:0044
Tue 09:0045
Tue 10:0044
Tue 11:0044
Tue 12:0044
Tue 13:0044
Tue 14:0044
Tue 15:0044
Tue 16:0044
Tue 17:0045
Tue 18:0045
Tue 19:0046
Tue 20:0047
Tue 21:00 · Now49
Tue 22:00 · Forecast52
Tue 23:00 · Forecast54
Wed 00:00 · Forecast56
Wed 01:00 · Forecast59
Wed 02:00 · Forecast62
Wed 03:00 · Forecast64
Wed 04:00 · Forecast65
Wed 05:00 · Forecast66
Wed 06:00 · Forecast68
Wed 07:00 · Forecast69
Wed 08:00 · Forecast73
Wed 09:00 · Forecast75
Wed 10:00 · Forecast76
Wed 11:00 · Forecast77
Wed 12:00 · Forecast77
Wed 13:00 · Forecast78
Wed 14:00 · Forecast79
Wed 15:00 · Forecast80
Wed 16:00 · Forecast80
Wed 17:00 · Forecast80
Wed 18:00 · Forecast80
Wed 19:00 · Forecast80
Wed 20:00 · Forecast80
Wed 21:00 · Forecast80
Wed 22:00 · Forecast79
Wed 23:00 · Forecast78
Thu 00:00 · Forecast77
Thu 01:00 · Forecast76
Thu 02:00 · Forecast74
Thu 03:00 · Forecast72
Thu 04:00 · Forecast70
Thu 05:00 · Forecast68
Thu 06:00 · Forecast65
Thu 07:00 · Forecast63
Thu 08:00 · Forecast62
Thu 09:00 · Forecast60
Thu 10:00 · Forecast58
Thu 11:00 · Forecast56
Thu 12:00 · Forecast55
Thu 13:00 · Forecast53
Thu 14:00 · Forecast52
Thu 15:00 · Forecast51
Thu 16:00 · Forecast51

Pollutants this hour

  • PM2.5 9.8 µg/m³ 24-hour mean 8.3 µg/m³ · within WHO’s 24-hour guideline (15) 49
  • PM10 12 µg/m³ 10
  • O₃ 48 µg/m³ 30
  • NO₂ 3 µg/m³ 1
  • SO₂ 1 µg/m³ 0
  • CO 0.19 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
Makassar Indonesia 96
Denpasar Indonesia 56
Balikpapan Indonesia 46
Situbondo Indonesia 62
Samarinda Indonesia 54
Banjarmasin Indonesia 108
Surabaya Indonesia 83

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 Dili’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 Dili right now?
49 on the US EPA scale (Good) at 21:00 UTC+9, 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 Dili 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 Dili get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 52 around 22:00 to 80 around 15:00 (4 Nov). Forecasts beyond a day are less certain.

How does Dili compare with other cities?
Right now it is the 658th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

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