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Air quality · Yemen

Aden Air Quality Index (AQI) today

Modelled estimate for 15:00 local time (UTC+3), refreshed 3 Nov, 07:52 UTC+0.

68 Moderate

Live estimate · modelled

US EPA AQI15:00 UTC+3, 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 70.

Over the next 24 hours the model expects the AQI to range from 61 around 06:00 to 68 around 17:00 (3 Nov).

403rd most polluted of 849 cities worldwide right now, 3rd of 5 in Yemen.

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

16:00 · 77 17:00 · 77 18:00 · 76 19:00 · 76 20:00 · 77 21:00 · 77 22:00 · 77 23:00 · 74 00:00 · 72 01:00 · 71 02:00 · 70 03:00 · 69 04:00 · 69 05:00 · 68 06:00 · 67 07:00 · 67 08:00 · 67 09:00 · 68 10:00 · 68 11:00 · 68 12:00 · 68 13:00 · 68 14:00 · 68 15:00 · 68 16:00 · 67 17:00 · 68 18:00 · 68 19:00 · 68 20:00 · 67 21:00 · 67 22:00 · 65 23:00 · 64 00:00 · 63 01:00 · 63 02:00 · 63 03:00 · 62 04:00 · 62 05:00 · 62 06:00 · 61 07:00 · 61 08:00 · 61 09:00 · 61 10:00 · 61 11:00 · 62 12:00 · 63 13:00 · 64 14:00 · 66 15:00 · 67 16:00 · 69 17:00 · 70 18:00 · 71 19:00 · 72 20:00 · 72 21:00 · 72 22:00 · 72 23:00 · 72 00:00 · 72 01:00 · 72 02:00 · 72 03:00 · 71 04:00 · 71 05:00 · 70 06:00 · 69 07:00 · 67 08:00 · 66 09:00 · 66 10:00 · 66 Now

US EPA AQI per hour, UTC+3. 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 16:0077
Mon 17:0077
Mon 18:0076
Mon 19:0076
Mon 20:0077
Mon 21:0077
Mon 22:0077
Mon 23:0074
Tue 00:0072
Tue 01:0071
Tue 02:0070
Tue 03:0069
Tue 04:0069
Tue 05:0068
Tue 06:0067
Tue 07:0067
Tue 08:0067
Tue 09:0068
Tue 10:0068
Tue 11:0068
Tue 12:0068
Tue 13:0068
Tue 14:0068
Tue 15:00 · Now68
Tue 16:00 · Forecast67
Tue 17:00 · Forecast68
Tue 18:00 · Forecast68
Tue 19:00 · Forecast68
Tue 20:00 · Forecast67
Tue 21:00 · Forecast67
Tue 22:00 · Forecast65
Tue 23:00 · Forecast64
Wed 00:00 · Forecast63
Wed 01:00 · Forecast63
Wed 02:00 · Forecast63
Wed 03:00 · Forecast62
Wed 04:00 · Forecast62
Wed 05:00 · Forecast62
Wed 06:00 · Forecast61
Wed 07:00 · Forecast61
Wed 08:00 · Forecast61
Wed 09:00 · Forecast61
Wed 10:00 · Forecast61
Wed 11:00 · Forecast62
Wed 12:00 · Forecast63
Wed 13:00 · Forecast64
Wed 14:00 · Forecast66
Wed 15:00 · Forecast67
Wed 16:00 · Forecast69
Wed 17:00 · Forecast70
Wed 18:00 · Forecast71
Wed 19:00 · Forecast72
Wed 20:00 · Forecast72
Wed 21:00 · Forecast72
Wed 22:00 · Forecast72
Wed 23:00 · Forecast72
Thu 00:00 · Forecast72
Thu 01:00 · Forecast72
Thu 02:00 · Forecast72
Thu 03:00 · Forecast71
Thu 04:00 · Forecast71
Thu 05:00 · Forecast70
Thu 06:00 · Forecast69
Thu 07:00 · Forecast67
Thu 08:00 · Forecast66
Thu 09:00 · Forecast66
Thu 10:00 · Forecast66

Pollutants this hour

  • PM2.5 17.1 µg/m³ 24-hour mean 19.3 µg/m³ · 1.3× WHO’s 24-hour guideline (15) 68
  • PM10 30 µg/m³ 30
  • O₃ 108 µg/m³ 47
  • NO₂ 1 µg/m³ 0
  • SO₂ 1 µg/m³ 0
  • CO 0.14 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
Taiz Ta‘izz 107
Ibb Ibb Governorate 99
Djibouti Djibouti 71
Sanaa Amanat Alasimah 55
Al Ḩudaydah Al Hudaydah 66
Asmara Eritrea 55
Addis Ababa Ethiopia 47

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 Aden’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 Aden right now?
68 on the US EPA scale (Moderate) at 15:00 UTC+3, 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 Aden 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 Aden get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 61 around 06:00 to 68 around 17:00 (3 Nov). Forecasts beyond a day are less certain.

How does Aden compare with other cities?
Right now it is the 403rd most polluted of 849 cities we track worldwide, and 3rd of 5 in Yemen, all on the same US EPA scale.

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