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Air quality · Ouest, Haiti

Port-au-Prince Air Quality Index (AQI) today

Modelled estimate for 06:00 local time (UTC-5), refreshed 3 Nov, 07:52 UTC+0.

152 Unhealthy

Live estimate · modelled

US EPA AQI06:00 UTC-5, 3 Nov Main pollutant: PM2.5

Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.

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 106.

Over the next 24 hours the model expects the AQI to range from 56 around 14:00 to 154 around 07:00 (3 Nov).

93rd most polluted of 849 cities worldwide right now.

What to do today

  • Long walk or run outside Shorten it, take breaks
  • Kids playing outside Limit it
  • Airing the house Open briefly
  • Mask outdoors N95 if outside for long

Based on the US EPA’s health statement: “Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

07:00 · 146 08:00 · 113 09:00 · 87 10:00 · 75 11:00 · 68 12:00 · 64 13:00 · 61 14:00 · 60 15:00 · 64 16:00 · 66 17:00 · 68 18:00 · 75 19:00 · 86 20:00 · 99 21:00 · 116 22:00 · 134 23:00 · 148 00:00 · 153 01:00 · 154 02:00 · 155 03:00 · 154 04:00 · 153 05:00 · 152 06:00 · 152 07:00 · 154 08:00 · 112 09:00 · 84 10:00 · 71 11:00 · 63 12:00 · 60 13:00 · 58 14:00 · 56 15:00 · 58 16:00 · 60 17:00 · 66 18:00 · 74 19:00 · 77 20:00 · 76 21:00 · 71 22:00 · 73 23:00 · 76 00:00 · 80 01:00 · 83 02:00 · 87 03:00 · 85 04:00 · 83 05:00 · 81 06:00 · 83 07:00 · 93 08:00 · 89 09:00 · 77 10:00 · 69 11:00 · 63 12:00 · 60 13:00 · 57 14:00 · 56 15:00 · 55 16:00 · 57 17:00 · 61 18:00 · 75 19:00 · 88 20:00 · 98 21:00 · 109 22:00 · 118 23:00 · 124 00:00 · 127 01:00 · 121 02:00 · 115 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 07:00146
Mon 08:00113
Mon 09:0087
Mon 10:0075
Mon 11:0068
Mon 12:0064
Mon 13:0061
Mon 14:0060
Mon 15:0064
Mon 16:0066
Mon 17:0068
Mon 18:0075
Mon 19:0086
Mon 20:0099
Mon 21:00116
Mon 22:00134
Mon 23:00148
Tue 00:00153
Tue 01:00154
Tue 02:00155
Tue 03:00154
Tue 04:00153
Tue 05:00152
Tue 06:00 · Now152
Tue 07:00 · Forecast154
Tue 08:00 · Forecast112
Tue 09:00 · Forecast84
Tue 10:00 · Forecast71
Tue 11:00 · Forecast63
Tue 12:00 · Forecast60
Tue 13:00 · Forecast58
Tue 14:00 · Forecast56
Tue 15:00 · Forecast58
Tue 16:00 · Forecast60
Tue 17:00 · Forecast66
Tue 18:00 · Forecast74
Tue 19:00 · Forecast77
Tue 20:00 · Forecast76
Tue 21:00 · Forecast71
Tue 22:00 · Forecast73
Tue 23:00 · Forecast76
Wed 00:00 · Forecast80
Wed 01:00 · Forecast83
Wed 02:00 · Forecast87
Wed 03:00 · Forecast85
Wed 04:00 · Forecast83
Wed 05:00 · Forecast81
Wed 06:00 · Forecast83
Wed 07:00 · Forecast93
Wed 08:00 · Forecast89
Wed 09:00 · Forecast77
Wed 10:00 · Forecast69
Wed 11:00 · Forecast63
Wed 12:00 · Forecast60
Wed 13:00 · Forecast57
Wed 14:00 · Forecast56
Wed 15:00 · Forecast55
Wed 16:00 · Forecast57
Wed 17:00 · Forecast61
Wed 18:00 · Forecast75
Wed 19:00 · Forecast88
Wed 20:00 · Forecast98
Wed 21:00 · Forecast109
Wed 22:00 · Forecast118
Wed 23:00 · Forecast124
Thu 00:00 · Forecast127
Thu 01:00 · Forecast121
Thu 02:00 · Forecast115

Pollutants this hour

  • PM2.5 56.9 µg/m³ 24-hour mean 37.6 µg/m³ · 2.5× WHO’s 24-hour guideline (15) 152
  • PM10 58 µg/m³ 52
  • O₃ 43 µg/m³ 7
  • NO₂ 33 µg/m³ 16
  • SO₂ 6 µg/m³ 3
  • CO 0.83 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
Santiago de los Caballeros Dominican Republic 52
Santo Domingo Dominican Republic 55
Kingston Jamaica 23
San Juan Puerto Rico 35
Maracaibo Venezuela 35
Barranquilla Colombia 49
Cartagena Colombia 40

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 Port-au-Prince’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 Port-au-Prince right now?
152 on the US EPA scale (Unhealthy) at 06:00 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 Port-au-Prince today?
Consider shortening outdoor exercise; sensitive groups should move it indoors. The EPA’s statement for “Unhealthy”: Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. General guidance, not medical advice.

Will the air in Port-au-Prince get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 56 around 14:00 to 154 around 07:00 (3 Nov). Forecasts beyond a day are less certain.

How does Port-au-Prince compare with other cities?
Right now it is the 93rd most polluted of 849 cities we track worldwide, all on the same US EPA scale.

Why does another app show a different AQI for Port-au-Prince?
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.