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Air quality · Michoacán, Mexico

Morelia Air Quality Index (AQI) today

Modelled estimate for 06:00 local time (UTC-6), refreshed 3 Nov, 07:52 UTC+0.

80 Moderate

Live estimate · modelled

US EPA AQI06:00 UTC-6, 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 66.

Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 82 around 03:00 (4 Nov).

301st most polluted of 849 cities worldwide right now, 4th of 22 in Mexico.

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

07:00 · 76 08:00 · 75 09:00 · 69 10:00 · 61 11:00 · 57 12:00 · 55 13:00 · 53 14:00 · 52 15:00 · 50 16:00 · 49 17:00 · 51 18:00 · 54 19:00 · 58 20:00 · 61 21:00 · 65 22:00 · 69 23:00 · 74 00:00 · 77 01:00 · 78 02:00 · 79 03:00 · 78 04:00 · 79 05:00 · 80 06:00 · 80 07:00 · 80 08:00 · 80 09:00 · 71 10:00 · 65 11:00 · 60 12:00 · 56 13:00 · 54 14:00 · 52 15:00 · 64 16:00 · 67 17:00 · 67 18:00 · 64 19:00 · 55 20:00 · 58 21:00 · 63 22:00 · 67 23:00 · 70 00:00 · 72 01:00 · 75 02:00 · 79 03:00 · 82 04:00 · 79 05:00 · 72 06:00 · 67 07:00 · 66 08:00 · 65 09:00 · 59 10:00 · 53 11:00 · 47 12:00 · 41 13:00 · 39 14:00 · 43 15:00 · 45 16:00 · 47 17:00 · 48 18:00 · 48 19:00 · 46 20:00 · 48 21:00 · 55 22:00 · 58 23:00 · 62 00:00 · 65 01:00 · 67 Now

US EPA AQI per hour, UTC-6. 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 07:0076
Mon 08:0075
Mon 09:0069
Mon 10:0061
Mon 11:0057
Mon 12:0055
Mon 13:0053
Mon 14:0052
Mon 15:0050
Mon 16:0049
Mon 17:0051
Mon 18:0054
Mon 19:0058
Mon 20:0061
Mon 21:0065
Mon 22:0069
Mon 23:0074
Tue 00:0077
Tue 01:0078
Tue 02:0079
Tue 03:0078
Tue 04:0079
Tue 05:0080
Tue 06:00 · Now80
Tue 07:00 · Forecast80
Tue 08:00 · Forecast80
Tue 09:00 · Forecast71
Tue 10:00 · Forecast65
Tue 11:00 · Forecast60
Tue 12:00 · Forecast56
Tue 13:00 · Forecast54
Tue 14:00 · Forecast52
Tue 15:00 · Forecast64
Tue 16:00 · Forecast67
Tue 17:00 · Forecast67
Tue 18:00 · Forecast64
Tue 19:00 · Forecast55
Tue 20:00 · Forecast58
Tue 21:00 · Forecast63
Tue 22:00 · Forecast67
Tue 23:00 · Forecast70
Wed 00:00 · Forecast72
Wed 01:00 · Forecast75
Wed 02:00 · Forecast79
Wed 03:00 · Forecast82
Wed 04:00 · Forecast79
Wed 05:00 · Forecast72
Wed 06:00 · Forecast67
Wed 07:00 · Forecast66
Wed 08:00 · Forecast65
Wed 09:00 · Forecast59
Wed 10:00 · Forecast53
Wed 11:00 · Forecast47
Wed 12:00 · Forecast41
Wed 13:00 · Forecast39
Wed 14:00 · Forecast43
Wed 15:00 · Forecast45
Wed 16:00 · Forecast47
Wed 17:00 · Forecast48
Wed 18:00 · Forecast48
Wed 19:00 · Forecast46
Wed 20:00 · Forecast48
Wed 21:00 · Forecast55
Wed 22:00 · Forecast58
Wed 23:00 · Forecast62
Thu 00:00 · Forecast65
Thu 01:00 · Forecast67

Pollutants this hour

  • PM2.5 24.6 µg/m³ 24-hour mean 17.3 µg/m³ · 1.2× WHO’s 24-hour guideline (15) 80
  • PM10 26 µg/m³ 23
  • O₃ 51 µg/m³ 19
  • NO₂ 19 µg/m³ 9
  • SO₂ 5 µg/m³ 1
  • CO 0.26 mg/m³ 2

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
Querétaro Querétaro 88
León Guanajuato 44
Mexico City Mexico City 122
Ecatepec de Morelos México 122
Zapopan Jalisco 73
Aguascalientes Aguascalientes 62
San Luis Potosí San Luis Potosí 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 Morelia’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 Morelia right now?
80 on the US EPA scale (Moderate) at 06:00 UTC-6, 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 Morelia 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 Morelia get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 82 around 03:00 (4 Nov). Forecasts beyond a day are less certain.

How does Morelia compare with other cities?
Right now it is the 301st most polluted of 849 cities we track worldwide, and 4th of 22 in Mexico, all on the same US EPA scale.

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