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Air quality · Perak, Malaysia

Ipoh Air Quality Index (AQI) today

Modelled estimate for 20:00 local time (UTC+8), refreshed 3 Nov, 07:52 UTC+0.

79 Moderate

Live estimate · modelled

US EPA AQI20:00 UTC+8, 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 57.

Over the next 24 hours the model expects the AQI to range from 19 around 07:00 to 92 around 22:00 (3 Nov).

304th most polluted of 849 cities worldwide right now, 3rd of 3 in Malaysia.

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

21:00 · 66 22:00 · 66 23:00 · 55 00:00 · 54 01:00 · 53 02:00 · 52 03:00 · 51 04:00 · 47 05:00 · 44 06:00 · 43 07:00 · 44 08:00 · 49 09:00 · 55 10:00 · 55 11:00 · 54 12:00 · 53 13:00 · 53 14:00 · 53 15:00 · 57 16:00 · 59 17:00 · 61 18:00 · 65 19:00 · 70 20:00 · 79 21:00 · 88 22:00 · 92 23:00 · 87 00:00 · 83 01:00 · 79 02:00 · 77 03:00 · 69 04:00 · 60 05:00 · 48 06:00 · 28 07:00 · 19 08:00 · 19 09:00 · 26 10:00 · 29 11:00 · 28 12:00 · 27 13:00 · 31 14:00 · 33 15:00 · 37 16:00 · 42 17:00 · 46 18:00 · 52 19:00 · 57 20:00 · 61 21:00 · 64 22:00 · 55 23:00 · 48 00:00 · 42 01:00 · 39 02:00 · 37 03:00 · 36 04:00 · 34 05:00 · 29 06:00 · 23 07:00 · 21 08:00 · 25 09:00 · 34 10:00 · 35 11:00 · 32 12:00 · 31 13:00 · 29 14:00 · 32 15:00 · 37 Now

US EPA AQI per hour, UTC+8. 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 21:0066
Mon 22:0066
Mon 23:0055
Tue 00:0054
Tue 01:0053
Tue 02:0052
Tue 03:0051
Tue 04:0047
Tue 05:0044
Tue 06:0043
Tue 07:0044
Tue 08:0049
Tue 09:0055
Tue 10:0055
Tue 11:0054
Tue 12:0053
Tue 13:0053
Tue 14:0053
Tue 15:0057
Tue 16:0059
Tue 17:0061
Tue 18:0065
Tue 19:0070
Tue 20:00 · Now79
Tue 21:00 · Forecast88
Tue 22:00 · Forecast92
Tue 23:00 · Forecast87
Wed 00:00 · Forecast83
Wed 01:00 · Forecast79
Wed 02:00 · Forecast77
Wed 03:00 · Forecast69
Wed 04:00 · Forecast60
Wed 05:00 · Forecast48
Wed 06:00 · Forecast28
Wed 07:00 · Forecast19
Wed 08:00 · Forecast19
Wed 09:00 · Forecast26
Wed 10:00 · Forecast29
Wed 11:00 · Forecast28
Wed 12:00 · Forecast27
Wed 13:00 · Forecast31
Wed 14:00 · Forecast33
Wed 15:00 · Forecast37
Wed 16:00 · Forecast42
Wed 17:00 · Forecast46
Wed 18:00 · Forecast52
Wed 19:00 · Forecast57
Wed 20:00 · Forecast61
Wed 21:00 · Forecast64
Wed 22:00 · Forecast55
Wed 23:00 · Forecast48
Thu 00:00 · Forecast42
Thu 01:00 · Forecast39
Thu 02:00 · Forecast37
Thu 03:00 · Forecast36
Thu 04:00 · Forecast34
Thu 05:00 · Forecast29
Thu 06:00 · Forecast23
Thu 07:00 · Forecast21
Thu 08:00 · Forecast25
Thu 09:00 · Forecast34
Thu 10:00 · Forecast35
Thu 11:00 · Forecast32
Thu 12:00 · Forecast31
Thu 13:00 · Forecast29
Thu 14:00 · Forecast32
Thu 15:00 · Forecast37

Pollutants this hour

  • PM2.5 29.0 µg/m³ 24-hour mean 12.4 µg/m³ · within WHO’s 24-hour guideline (15) 79
  • PM10 29 µg/m³ 22
  • O₃ 61 µg/m³ 45
  • NO₂ 39 µg/m³ 19
  • SO₂ 17 µg/m³ 9
  • CO 0.68 mg/m³ 5

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
Kuala Lumpur Kuala Lumpur 150
Medan Indonesia 143
Pekanbaru Indonesia 61
Johor Bahru Johor 113
Singapore Singapore 115
Batam Indonesia 115
Padang Indonesia 84

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 Ipoh’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 Ipoh right now?
79 on the US EPA scale (Moderate) at 20:00 UTC+8, 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 Ipoh 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 Ipoh get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 19 around 07:00 to 92 around 22:00 (3 Nov). Forecasts beyond a day are less certain.

How does Ipoh compare with other cities?
Right now it is the 304th most polluted of 849 cities we track worldwide, and 3rd of 3 in Malaysia, all on the same US EPA scale.

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