Worst air pollution Limoeiro do Norte, today and tomorrow
Today (20 September): Air quality in Limoeiro do Norte is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM2.5: 26.0/100).
Tomorrow (21 September 2026): Air quality in Limoeiro do Norte is moderate. AQI worsens to moderate; PM2.5 increases to moderate; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (PM2.5: 40.9/100). 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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Limoeiro do Norte's air quality reflects the Ceará lower Jaguaribe valley, with vehicle emissions from the BR-116 and surrounding irrigated fruit farming and soybean operations contributing local sources. Dry season burning from surrounding Caatinga agricultural land contributes seasonal PM10 elevation, while the flat Jaguaribe river valley terrain generally allows reasonable dispersal and the lower valley altitude reduces the beneficial trade wind ventilation compared to highland Ceará cities throughout the year.
Today - 20 September | Pollution peaks at 12:00
AQI:
Fair
26.0/100
PM2.5 (fine particles):
Fair
26.0/100
PM10 (coarse particles):
Good
15.9/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
9.4/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.3/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
6.4/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 17:00
AQI:
Moderate
40.9/100
PM2.5 (fine particles):
Moderate
40.9/100
PM10 (coarse particles):
Fair
24.3/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
9.5/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.3/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
11.7/100
Pollen forecast in Limoeiro do Norte
View pollen forecastFrequently Asked Questions
Is air quality bad in Limoeiro do Norte right now?
On 20 September 2026, overall air quality in Limoeiro do Norte is fair. AQI is the main air quality indicator at 26.0/100. Pollution peaks around 12:00 PM (PM2.5: 26.0/100).
Will air quality be worse tomorrow in Limoeiro do Norte?
On 21 September 2026, air quality conditions in Limoeiro do Norte will be worse than today, with AQI forecast at moderate at 40.9/100. Pollution peaks around 5:00 PM (PM2.5: 40.9/100).
When is air pollution at its worst in Limoeiro do Norte?
Limoeiro do Norte residents notice reduced air quality mainly when native caatinga scrub and irrigated agricultural vegetation along the Jaguaribe pollen peaks, and during spells of vehicle emissions from the BR-116 and surrounding irrigated fruit farming and soybean operations; the clearest air tends to follow a change in wind direction or rainfall here.
Are air quality levels in Limoeiro do Norte 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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