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Air quality · Mexico

Querétaro Air Quality Index (AQI) today

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

92 Moderate

Live estimate · modelled

US EPA AQI07:00 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 36 around 22:00 to 96 around 08:00 (3 Nov).

231st most polluted of 849 cities worldwide right now, 3rd 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

08:00 · 66 09:00 · 64 10:00 · 59 11:00 · 55 12:00 · 52 13:00 · 47 14:00 · 41 15:00 · 41 16:00 · 44 17:00 · 47 18:00 · 49 19:00 · 53 20:00 · 59 21:00 · 63 22:00 · 66 23:00 · 70 00:00 · 74 01:00 · 78 02:00 · 80 03:00 · 83 04:00 · 85 05:00 · 86 06:00 · 88 07:00 · 92 08:00 · 96 09:00 · 84 10:00 · 68 11:00 · 59 12:00 · 54 13:00 · 51 14:00 · 44 15:00 · 45 16:00 · 49 17:00 · 51 18:00 · 51 19:00 · 48 20:00 · 44 21:00 · 41 22:00 · 36 23:00 · 44 00:00 · 49 01:00 · 51 02:00 · 51 03:00 · 51 04:00 · 51 05:00 · 52 06:00 · 54 07:00 · 55 08:00 · 56 09:00 · 53 10:00 · 52 11:00 · 51 12:00 · 49 13:00 · 48 14:00 · 45 15:00 · 44 16:00 · 47 17:00 · 48 18:00 · 48 19:00 · 50 20:00 · 53 21:00 · 56 22:00 · 58 23:00 · 61 00:00 · 64 01:00 · 66 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 08:0066
Mon 09:0064
Mon 10:0059
Mon 11:0055
Mon 12:0052
Mon 13:0047
Mon 14:0041
Mon 15:0041
Mon 16:0044
Mon 17:0047
Mon 18:0049
Mon 19:0053
Mon 20:0059
Mon 21:0063
Mon 22:0066
Mon 23:0070
Tue 00:0074
Tue 01:0078
Tue 02:0080
Tue 03:0083
Tue 04:0085
Tue 05:0086
Tue 06:0088
Tue 07:00 · Now92
Tue 08:00 · Forecast96
Tue 09:00 · Forecast84
Tue 10:00 · Forecast68
Tue 11:00 · Forecast59
Tue 12:00 · Forecast54
Tue 13:00 · Forecast51
Tue 14:00 · Forecast44
Tue 15:00 · Forecast45
Tue 16:00 · Forecast49
Tue 17:00 · Forecast51
Tue 18:00 · Forecast51
Tue 19:00 · Forecast48
Tue 20:00 · Forecast44
Tue 21:00 · Forecast41
Tue 22:00 · Forecast36
Tue 23:00 · Forecast44
Wed 00:00 · Forecast49
Wed 01:00 · Forecast51
Wed 02:00 · Forecast51
Wed 03:00 · Forecast51
Wed 04:00 · Forecast51
Wed 05:00 · Forecast52
Wed 06:00 · Forecast54
Wed 07:00 · Forecast55
Wed 08:00 · Forecast56
Wed 09:00 · Forecast53
Wed 10:00 · Forecast52
Wed 11:00 · Forecast51
Wed 12:00 · Forecast49
Wed 13:00 · Forecast48
Wed 14:00 · Forecast45
Wed 15:00 · Forecast44
Wed 16:00 · Forecast47
Wed 17:00 · Forecast48
Wed 18:00 · Forecast48
Wed 19:00 · Forecast50
Wed 20:00 · Forecast53
Wed 21:00 · Forecast56
Wed 22:00 · Forecast58
Wed 23:00 · Forecast61
Thu 00:00 · Forecast64
Thu 01:00 · Forecast66

Pollutants this hour

  • PM2.5 32.9 µg/m³ 24-hour mean 17.1 µg/m³ · 1.1× WHO’s 24-hour guideline (15) 92
  • PM10 33 µg/m³ 29
  • O₃ 19 µg/m³ 3
  • NO₂ 34 µg/m³ 17
  • SO₂ 8 µg/m³ 4
  • CO 0.41 mg/m³ 3

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
Morelia Michoacán 80
León Guanajuato 46
Ecatepec de Morelos México 132
San Luis Potosí San Luis Potosí 56
Mexico City Mexico City 132
Aguascalientes Aguascalientes 63
Puebla Puebla 75

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 Querétaro’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 Querétaro right now?
92 on the US EPA scale (Moderate) at 07:00 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 Querétaro 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 Querétaro get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 36 around 22:00 to 96 around 08:00 (3 Nov). Forecasts beyond a day are less certain.

How does Querétaro compare with other cities?
Right now it is the 231st most polluted of 849 cities we track worldwide, and 3rd of 22 in Mexico, all on the same US EPA scale.

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