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Air quality · National Capital, Papua New Guinea

Port Moresby Air Quality Index (AQI) today

Modelled estimate for 22:00 local time (UTC+10), refreshed 3 Nov, 07:52 UTC+0.

41 Good

Live estimate · modelled

US EPA AQI22:00 UTC+10, 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 45.

Over the next 24 hours the model expects the AQI to range from 32 around 07:00 to 40 around 23:00 (3 Nov).

705th 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

23:00 · 47 00:00 · 49 01:00 · 49 02:00 · 49 03:00 · 48 04:00 · 47 05:00 · 46 06:00 · 46 07:00 · 47 08:00 · 47 09:00 · 47 10:00 · 47 11:00 · 47 12:00 · 47 13:00 · 46 14:00 · 44 15:00 · 44 16:00 · 44 17:00 · 44 18:00 · 44 19:00 · 44 20:00 · 43 21:00 · 43 22:00 · 41 23:00 · 40 00:00 · 39 01:00 · 38 02:00 · 37 03:00 · 36 04:00 · 34 05:00 · 33 06:00 · 33 07:00 · 32 08:00 · 32 09:00 · 32 10:00 · 32 11:00 · 32 12:00 · 32 13:00 · 32 14:00 · 32 15:00 · 32 16:00 · 33 17:00 · 34 18:00 · 36 19:00 · 36 20:00 · 38 21:00 · 38 22:00 · 39 23:00 · 39 00:00 · 39 01:00 · 39 02:00 · 40 03:00 · 40 04:00 · 39 05:00 · 39 06:00 · 38 07:00 · 38 08:00 · 37 09:00 · 37 10:00 · 37 11:00 · 37 12:00 · 38 13:00 · 38 14:00 · 38 15:00 · 38 16:00 · 39 17:00 · 39 Now

US EPA AQI per hour, UTC+10. 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 23:0047
Tue 00:0049
Tue 01:0049
Tue 02:0049
Tue 03:0048
Tue 04:0047
Tue 05:0046
Tue 06:0046
Tue 07:0047
Tue 08:0047
Tue 09:0047
Tue 10:0047
Tue 11:0047
Tue 12:0047
Tue 13:0046
Tue 14:0044
Tue 15:0044
Tue 16:0044
Tue 17:0044
Tue 18:0044
Tue 19:0044
Tue 20:0043
Tue 21:0043
Tue 22:00 · Now41
Tue 23:00 · Forecast40
Wed 00:00 · Forecast39
Wed 01:00 · Forecast38
Wed 02:00 · Forecast37
Wed 03:00 · Forecast36
Wed 04:00 · Forecast34
Wed 05:00 · Forecast33
Wed 06:00 · Forecast33
Wed 07:00 · Forecast32
Wed 08:00 · Forecast32
Wed 09:00 · Forecast32
Wed 10:00 · Forecast32
Wed 11:00 · Forecast32
Wed 12:00 · Forecast32
Wed 13:00 · Forecast32
Wed 14:00 · Forecast32
Wed 15:00 · Forecast32
Wed 16:00 · Forecast33
Wed 17:00 · Forecast34
Wed 18:00 · Forecast36
Wed 19:00 · Forecast36
Wed 20:00 · Forecast38
Wed 21:00 · Forecast38
Wed 22:00 · Forecast39
Wed 23:00 · Forecast39
Thu 00:00 · Forecast39
Thu 01:00 · Forecast39
Thu 02:00 · Forecast40
Thu 03:00 · Forecast40
Thu 04:00 · Forecast39
Thu 05:00 · Forecast39
Thu 06:00 · Forecast38
Thu 07:00 · Forecast38
Thu 08:00 · Forecast37
Thu 09:00 · Forecast37
Thu 10:00 · Forecast37
Thu 11:00 · Forecast37
Thu 12:00 · Forecast38
Thu 13:00 · Forecast38
Thu 14:00 · Forecast38
Thu 15:00 · Forecast38
Thu 16:00 · Forecast39
Thu 17:00 · Forecast39

Pollutants this hour

  • PM2.5 6.7 µg/m³ 24-hour mean 8.2 µg/m³ · within WHO’s 24-hour guideline (15) 41
  • PM10 11 µg/m³ 10
  • O₃ 39 µg/m³ 19
  • NO₂ 1 µg/m³ 0
  • SO₂ 1 µg/m³ 0
  • CO 0.12 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
Brisbane Australia 31
Gold Coast Australia 32
Dili Timor Leste 49
Sydney Australia 58
Canberra Australia 28
Adelaide Australia 37
General Santos Philippines 32

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 Moresby’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 Moresby right now?
41 on the US EPA scale (Good) at 22:00 UTC+10, 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 Moresby 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 Moresby get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 32 around 07:00 to 40 around 23:00 (3 Nov). Forecasts beyond a day are less certain.

How does Port Moresby compare with other cities?
Right now it is the 705th 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 Moresby?
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.