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Air quality · Khomas Region, Namibia

Windhoek Air Quality Index (AQI) today

Modelled estimate for 15:00 local time (UTC+2), refreshed 3 Nov, 07:52 UTC+0.

39 Good

Live estimate · modelled

US EPA AQI15:00 UTC+2, 3 Nov Main pollutant: O₃

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 12.

Over the next 24 hours the model expects the AQI to range from 19 around 06:00 to 45 around 19:00 (3 Nov).

717th 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

16:00 · 41 17:00 · 42 18:00 · 42 19:00 · 42 20:00 · 40 21:00 · 39 22:00 · 37 23:00 · 34 00:00 · 31 01:00 · 29 02:00 · 26 03:00 · 23 04:00 · 20 05:00 · 19 06:00 · 17 07:00 · 17 08:00 · 18 09:00 · 19 10:00 · 22 11:00 · 25 12:00 · 29 13:00 · 32 14:00 · 36 15:00 · 39 16:00 · 42 17:00 · 44 18:00 · 44 19:00 · 45 20:00 · 45 21:00 · 44 22:00 · 43 23:00 · 40 00:00 · 36 01:00 · 33 02:00 · 30 03:00 · 26 04:00 · 23 05:00 · 21 06:00 · 19 07:00 · 19 08:00 · 19 09:00 · 19 10:00 · 21 11:00 · 23 12:00 · 26 13:00 · 29 14:00 · 31 15:00 · 34 16:00 · 37 17:00 · 39 18:00 · 40 19:00 · 40 20:00 · 39 21:00 · 38 22:00 · 36 23:00 · 33 00:00 · 31 01:00 · 29 02:00 · 26 03:00 · 23 04:00 · 21 05:00 · 19 06:00 · 18 07:00 · 18 08:00 · 19 09:00 · 20 Now

US EPA AQI per hour, UTC+2. 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 16:0041
Mon 17:0042
Mon 18:0042
Mon 19:0042
Mon 20:0040
Mon 21:0039
Mon 22:0037
Mon 23:0034
Tue 00:0031
Tue 01:0029
Tue 02:0026
Tue 03:0023
Tue 04:0020
Tue 05:0019
Tue 06:0017
Tue 07:0017
Tue 08:0018
Tue 09:0019
Tue 10:0022
Tue 11:0025
Tue 12:0029
Tue 13:0032
Tue 14:0036
Tue 15:00 · Now39
Tue 16:00 · Forecast42
Tue 17:00 · Forecast44
Tue 18:00 · Forecast44
Tue 19:00 · Forecast45
Tue 20:00 · Forecast45
Tue 21:00 · Forecast44
Tue 22:00 · Forecast43
Tue 23:00 · Forecast40
Wed 00:00 · Forecast36
Wed 01:00 · Forecast33
Wed 02:00 · Forecast30
Wed 03:00 · Forecast26
Wed 04:00 · Forecast23
Wed 05:00 · Forecast21
Wed 06:00 · Forecast19
Wed 07:00 · Forecast19
Wed 08:00 · Forecast19
Wed 09:00 · Forecast19
Wed 10:00 · Forecast21
Wed 11:00 · Forecast23
Wed 12:00 · Forecast26
Wed 13:00 · Forecast29
Wed 14:00 · Forecast31
Wed 15:00 · Forecast34
Wed 16:00 · Forecast37
Wed 17:00 · Forecast39
Wed 18:00 · Forecast40
Wed 19:00 · Forecast40
Wed 20:00 · Forecast39
Wed 21:00 · Forecast38
Wed 22:00 · Forecast36
Wed 23:00 · Forecast33
Thu 00:00 · Forecast31
Thu 01:00 · Forecast29
Thu 02:00 · Forecast26
Thu 03:00 · Forecast23
Thu 04:00 · Forecast21
Thu 05:00 · Forecast19
Thu 06:00 · Forecast18
Thu 07:00 · Forecast18
Thu 08:00 · Forecast19
Thu 09:00 · Forecast20

Pollutants this hour

  • PM2.5 0.7 µg/m³ 24-hour mean 2.2 µg/m³ · within WHO’s 24-hour guideline (15) 6
  • PM10 1 µg/m³ 1
  • O₃ 100 µg/m³ 39
  • NO₂ 0 µg/m³ 0
  • SO₂ 0 µg/m³ 0
  • CO 0.13 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
Gaborone Botswana 53
Lubango Angola 54
Soshanguve South Africa 74
Evaton South Africa 80
Pretoria South Africa 74
Johannesburg South Africa 80
Benoni South Africa 97

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 Windhoek’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 Windhoek right now?
39 on the US EPA scale (Good) at 15:00 UTC+2, 3 Nov. O₃ 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 Windhoek 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 Windhoek get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 19 around 06:00 to 45 around 19:00 (3 Nov). Forecasts beyond a day are less certain.

How does Windhoek compare with other cities?
Right now it is the 717th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

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