Worst air pollution Liberia, today and tomorrow
Today (16 July): Air quality in Liberia is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 36.8/100).
Tomorrow (17 July 2026): Air quality in Liberia is medium. AQI improves to medium; NO2 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (NO2: 51.0/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Liberia in Costa Rica reflects the Guanacaste Province's flat Pacific coastal plain position at 53 metres, with vehicle traffic on surrounding roads and the cattle, tourism, and services corridor contributing local sources. Consistent Pacific maritime breezes provide seasonal ventilation, while the dry season's Papagayo winds create extraordinary ventilation across this arid Pacific corridor and Liberia generally maintains moderate to good Costa Rican Pacific coastal provincial capital readings throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
36.8/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Fair
36.8/100
O3 (ozone):
Good
16.5/100
SO2 (sulfur dioxide):
Good
3.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.1/100
PM1 (ultrafine particles):
Good
9.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
51.0/100
PM2.5 (fine particles):
Good
9.5/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Medium
51.0/100
O3 (ozone):
Good
18.6/100
SO2 (sulfur dioxide):
Good
5.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Good
13.0/100
Frequently Asked Questions
Is air quality bad in Liberia right now?
On 16 July 2026, overall air quality in Liberia is fair. AQI is the main air quality indicator at 36.8/100. Pollution peaks around 4:00 PM (NO2: 36.8/100).
Will air quality be worse tomorrow in Liberia?
On 17 July 2026, air quality conditions in Liberia will be better than today, with AQI forecast at medium at 51.0/100. Pollution peaks around 3:00 PM (NO2: 51.0/100).
When is air pollution at its worst in Liberia?
The biggest local contributors to pollution in Liberia are traffic on the surrounding roads along with tourism-related traffic, particularly once the sea breeze weakens. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Liberia based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app