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Air quality · Quintana Roo, Mexico

Cancún Air Quality Index (AQI) today

Modelled estimate for 08:00 local time (UTC-5), refreshed 3 Nov, 07:52 UTC+0.

32 Good

Live estimate · modelled

US EPA AQI08:00 UTC-5, 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 32.

Over the next 24 hours the model expects the AQI to range from 32 around 09:00 to 41 around 17:00 (3 Nov).

761st most polluted of 849 cities worldwide right now, 18th of 22 in Mexico.

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

09:00 · 33 10:00 · 33 11:00 · 33 12:00 · 33 13:00 · 34 14:00 · 36 15:00 · 38 16:00 · 40 17:00 · 40 18:00 · 40 19:00 · 39 20:00 · 38 21:00 · 37 22:00 · 36 23:00 · 34 00:00 · 33 01:00 · 32 02:00 · 31 03:00 · 31 04:00 · 31 05:00 · 31 06:00 · 31 07:00 · 31 08:00 · 32 09:00 · 32 10:00 · 33 11:00 · 34 12:00 · 37 13:00 · 38 14:00 · 38 15:00 · 39 16:00 · 40 17:00 · 41 18:00 · 41 19:00 · 40 20:00 · 39 21:00 · 37 22:00 · 36 23:00 · 34 00:00 · 33 01:00 · 33 02:00 · 33 03:00 · 32 04:00 · 32 05:00 · 32 06:00 · 32 07:00 · 32 08:00 · 32 09:00 · 32 10:00 · 32 11:00 · 33 12:00 · 33 13:00 · 35 14:00 · 36 15:00 · 38 16:00 · 39 17:00 · 40 18:00 · 40 19:00 · 40 20:00 · 39 21:00 · 39 22:00 · 38 23:00 · 37 00:00 · 36 01:00 · 35 02:00 · 35 Now

US EPA AQI per hour, UTC-5. 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 09:0033
Mon 10:0033
Mon 11:0033
Mon 12:0033
Mon 13:0034
Mon 14:0036
Mon 15:0038
Mon 16:0040
Mon 17:0040
Mon 18:0040
Mon 19:0039
Mon 20:0038
Mon 21:0037
Mon 22:0036
Mon 23:0034
Tue 00:0033
Tue 01:0032
Tue 02:0031
Tue 03:0031
Tue 04:0031
Tue 05:0031
Tue 06:0031
Tue 07:0031
Tue 08:00 · Now32
Tue 09:00 · Forecast32
Tue 10:00 · Forecast33
Tue 11:00 · Forecast34
Tue 12:00 · Forecast37
Tue 13:00 · Forecast38
Tue 14:00 · Forecast38
Tue 15:00 · Forecast39
Tue 16:00 · Forecast40
Tue 17:00 · Forecast41
Tue 18:00 · Forecast41
Tue 19:00 · Forecast40
Tue 20:00 · Forecast39
Tue 21:00 · Forecast37
Tue 22:00 · Forecast36
Tue 23:00 · Forecast34
Wed 00:00 · Forecast33
Wed 01:00 · Forecast33
Wed 02:00 · Forecast33
Wed 03:00 · Forecast32
Wed 04:00 · Forecast32
Wed 05:00 · Forecast32
Wed 06:00 · Forecast32
Wed 07:00 · Forecast32
Wed 08:00 · Forecast32
Wed 09:00 · Forecast32
Wed 10:00 · Forecast32
Wed 11:00 · Forecast33
Wed 12:00 · Forecast33
Wed 13:00 · Forecast35
Wed 14:00 · Forecast36
Wed 15:00 · Forecast38
Wed 16:00 · Forecast39
Wed 17:00 · Forecast40
Wed 18:00 · Forecast40
Wed 19:00 · Forecast40
Wed 20:00 · Forecast39
Wed 21:00 · Forecast39
Wed 22:00 · Forecast38
Wed 23:00 · Forecast37
Thu 00:00 · Forecast36
Thu 01:00 · Forecast35
Thu 02:00 · Forecast35

Pollutants this hour

  • PM2.5 6.2 µg/m³ 24-hour mean 5.8 µg/m³ · within WHO’s 24-hour guideline (15) 32
  • PM10 8 µg/m³ 7
  • O₃ 65 µg/m³ 30
  • NO₂ 5 µg/m³ 2
  • SO₂ 4 µg/m³ 1
  • CO 0.27 mg/m³ 7

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
Mérida Yucatán 54
Havana Cuba 21
San Pedro Sula Honduras 70
Tegucigalpa Honduras 34
Tuxtla Chiapas 53
Guatemala City Guatemala 63
San Salvador El Salvador 56

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 Cancún’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 Cancún right now?
32 on the US EPA scale (Good) at 08:00 UTC-5, 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 Cancún 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 Cancún get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 32 around 09:00 to 41 around 17:00 (3 Nov). Forecasts beyond a day are less certain.

How does Cancún compare with other cities?
Right now it is the 761st most polluted of 849 cities we track worldwide, and 18th of 22 in Mexico, all on the same US EPA scale.

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