GlobeMetrics
EN
  • English✓
  • हिंदी—
  • मराठी—

Try “Pune”, “Poona” or “पुणे”

Air quality · Bengo, Angola

Calumbo Air Quality Index (AQI) today

Modelled estimate for 13:00 local time (UTC+1), refreshed 3 Nov, 07:52 UTC+0.

43 Good

Live estimate · modelled

US EPA AQI13:00 UTC+1, 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 37.

Over the next 24 hours the model expects the AQI to range from 47 around 03:00 to 54 around 12:00 (4 Nov).

687th most polluted of 849 cities worldwide right now, 3rd of 3 in Angola.

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

14:00 · 53 15:00 · 51 16:00 · 44 17:00 · 37 18:00 · 35 19:00 · 33 20:00 · 33 21:00 · 32 22:00 · 34 23:00 · 34 00:00 · 33 01:00 · 34 02:00 · 35 03:00 · 35 04:00 · 34 05:00 · 34 06:00 · 34 07:00 · 34 08:00 · 35 09:00 · 36 10:00 · 38 11:00 · 38 12:00 · 39 13:00 · 43 14:00 · 49 15:00 · 52 16:00 · 52 17:00 · 52 18:00 · 51 19:00 · 51 20:00 · 50 21:00 · 49 22:00 · 49 23:00 · 50 00:00 · 49 01:00 · 49 02:00 · 48 03:00 · 47 04:00 · 48 05:00 · 48 06:00 · 48 07:00 · 49 08:00 · 52 09:00 · 52 10:00 · 53 11:00 · 53 12:00 · 54 13:00 · 54 14:00 · 54 15:00 · 54 16:00 · 54 17:00 · 54 18:00 · 55 19:00 · 55 20:00 · 55 21:00 · 55 22:00 · 55 23:00 · 55 00:00 · 55 01:00 · 55 02:00 · 55 03:00 · 55 04:00 · 55 05:00 · 55 06:00 · 56 07:00 · 56 08:00 · 58 Now

US EPA AQI per hour, UTC+1. 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 14:0053
Mon 15:0051
Mon 16:0044
Mon 17:0037
Mon 18:0035
Mon 19:0033
Mon 20:0033
Mon 21:0032
Mon 22:0034
Mon 23:0034
Tue 00:0033
Tue 01:0034
Tue 02:0035
Tue 03:0035
Tue 04:0034
Tue 05:0034
Tue 06:0034
Tue 07:0034
Tue 08:0035
Tue 09:0036
Tue 10:0038
Tue 11:0038
Tue 12:0039
Tue 13:00 · Now43
Tue 14:00 · Forecast49
Tue 15:00 · Forecast52
Tue 16:00 · Forecast52
Tue 17:00 · Forecast52
Tue 18:00 · Forecast51
Tue 19:00 · Forecast51
Tue 20:00 · Forecast50
Tue 21:00 · Forecast49
Tue 22:00 · Forecast49
Tue 23:00 · Forecast50
Wed 00:00 · Forecast49
Wed 01:00 · Forecast49
Wed 02:00 · Forecast48
Wed 03:00 · Forecast47
Wed 04:00 · Forecast48
Wed 05:00 · Forecast48
Wed 06:00 · Forecast48
Wed 07:00 · Forecast49
Wed 08:00 · Forecast52
Wed 09:00 · Forecast52
Wed 10:00 · Forecast53
Wed 11:00 · Forecast53
Wed 12:00 · Forecast54
Wed 13:00 · Forecast54
Wed 14:00 · Forecast54
Wed 15:00 · Forecast54
Wed 16:00 · Forecast54
Wed 17:00 · Forecast54
Wed 18:00 · Forecast55
Wed 19:00 · Forecast55
Wed 20:00 · Forecast55
Wed 21:00 · Forecast55
Wed 22:00 · Forecast55
Wed 23:00 · Forecast55
Thu 00:00 · Forecast55
Thu 01:00 · Forecast55
Thu 02:00 · Forecast55
Thu 03:00 · Forecast55
Thu 04:00 · Forecast55
Thu 05:00 · Forecast55
Thu 06:00 · Forecast56
Thu 07:00 · Forecast56
Thu 08:00 · Forecast58

Pollutants this hour

  • PM2.5 8.9 µg/m³ 24-hour mean 6.7 µg/m³ · within WHO’s 24-hour guideline (15) 43
  • PM10 11 µg/m³ 8
  • O₃ 95 µg/m³ 32
  • NO₂ 2 µg/m³ 1
  • SO₂ 5 µg/m³ 1
  • 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
Luanda Luanda 58
Pointe-Noire Congo 41
Kinshasa DR Congo 55
Brazzaville Congo 55
Lubango Huíla 54
Tshikapa DR Congo 33
Kananga DR Congo 24

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 Calumbo’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 Calumbo right now?
43 on the US EPA scale (Good) at 13:00 UTC+1, 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 Calumbo 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 Calumbo get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 47 around 03:00 to 54 around 12:00 (4 Nov). Forecasts beyond a day are less certain.

How does Calumbo compare with other cities?
Right now it is the 687th most polluted of 849 cities we track worldwide, and 3rd of 3 in Angola, all on the same US EPA scale.

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