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Air quality · Guatemala, Guatemala

Guatemala City Air Quality Index (AQI) today

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

63 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 60.

Over the next 24 hours the model expects the AQI to range from 30 around 13:00 to 135 around 23:00 (3 Nov).

464th most polluted of 849 cities worldwide right now.

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 · 49 09:00 · 37 10:00 · 28 11:00 · 22 12:00 · 21 13:00 · 23 14:00 · 26 15:00 · 28 16:00 · 29 17:00 · 28 18:00 · 53 19:00 · 69 20:00 · 80 21:00 · 89 22:00 · 93 23:00 · 90 00:00 · 84 01:00 · 77 02:00 · 69 03:00 · 63 04:00 · 60 05:00 · 60 06:00 · 62 07:00 · 63 08:00 · 63 09:00 · 58 10:00 · 52 11:00 · 42 12:00 · 34 13:00 · 30 14:00 · 33 15:00 · 35 16:00 · 35 17:00 · 33 18:00 · 56 19:00 · 75 20:00 · 93 21:00 · 111 22:00 · 126 23:00 · 135 00:00 · 135 01:00 · 126 02:00 · 95 03:00 · 82 04:00 · 74 05:00 · 69 06:00 · 70 07:00 · 68 08:00 · 64 09:00 · 59 10:00 · 54 11:00 · 45 12:00 · 36 13:00 · 30 14:00 · 32 15:00 · 34 16:00 · 35 17:00 · 33 18:00 · 55 19:00 · 73 20:00 · 92 21:00 · 113 22:00 · 132 23:00 · 142 00:00 · 140 01:00 · 134 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 08:0049
Mon 09:0037
Mon 10:0028
Mon 11:0022
Mon 12:0021
Mon 13:0023
Mon 14:0026
Mon 15:0028
Mon 16:0029
Mon 17:0028
Mon 18:0053
Mon 19:0069
Mon 20:0080
Mon 21:0089
Mon 22:0093
Mon 23:0090
Tue 00:0084
Tue 01:0077
Tue 02:0069
Tue 03:0063
Tue 04:0060
Tue 05:0060
Tue 06:0062
Tue 07:00 · Now63
Tue 08:00 · Forecast63
Tue 09:00 · Forecast58
Tue 10:00 · Forecast52
Tue 11:00 · Forecast42
Tue 12:00 · Forecast34
Tue 13:00 · Forecast30
Tue 14:00 · Forecast33
Tue 15:00 · Forecast35
Tue 16:00 · Forecast35
Tue 17:00 · Forecast33
Tue 18:00 · Forecast56
Tue 19:00 · Forecast75
Tue 20:00 · Forecast93
Tue 21:00 · Forecast111
Tue 22:00 · Forecast126
Tue 23:00 · Forecast135
Wed 00:00 · Forecast135
Wed 01:00 · Forecast126
Wed 02:00 · Forecast95
Wed 03:00 · Forecast82
Wed 04:00 · Forecast74
Wed 05:00 · Forecast69
Wed 06:00 · Forecast70
Wed 07:00 · Forecast68
Wed 08:00 · Forecast64
Wed 09:00 · Forecast59
Wed 10:00 · Forecast54
Wed 11:00 · Forecast45
Wed 12:00 · Forecast36
Wed 13:00 · Forecast30
Wed 14:00 · Forecast32
Wed 15:00 · Forecast34
Wed 16:00 · Forecast35
Wed 17:00 · Forecast33
Wed 18:00 · Forecast55
Wed 19:00 · Forecast73
Wed 20:00 · Forecast92
Wed 21:00 · Forecast113
Wed 22:00 · Forecast132
Wed 23:00 · Forecast142
Thu 00:00 · Forecast140
Thu 01:00 · Forecast134

Pollutants this hour

  • PM2.5 16.8 µg/m³ 24-hour mean 14.1 µg/m³ · within WHO’s 24-hour guideline (15) 63
  • PM10 17 µg/m³ 15
  • O₃ 39 µg/m³ 12
  • NO₂ 7 µg/m³ 3
  • SO₂ 2 µg/m³ 0
  • CO 0.58 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
San Salvador El Salvador 56
San Pedro Sula Honduras 70
Tegucigalpa Honduras 34
Tuxtla Mexico 53
Managua Nicaragua 18
Mérida Mexico 54
Cancún Mexico 32

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 Guatemala City’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 Guatemala City right now?
63 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 Guatemala City 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 Guatemala City get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 30 around 13:00 to 135 around 23:00 (3 Nov). Forecasts beyond a day are less certain.

How does Guatemala City compare with other cities?
Right now it is the 464th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

Why does another app show a different AQI for Guatemala City?
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.