Guadalajara Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (14 October): Air quality in Guadalajara is very poor. AQI and PM10 are very poor; PM2.5 is poor; PM1 is fair; NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 6:00 PM (PM2.5: 100/100).
Air Quality Tomorrow
Tomorrow (15 October 2026): Air quality in Guadalajara is poor. AQI improves to poor; PM2.5 decreases to moderate; PM10 decreases to poor; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 100/100).
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Air Quality
Today - 14 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Very poor | 91.2/100 |
| PM2.5 (fine particles) | Poor | 68.9/100 |
| PM10 (coarse particles) | Very poor | 91.2/100 |
| NO2 (nitrogen dioxide) | Good | 0.4/100 |
| O3 (ozone) | Good | 11.1/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.7/100 |
| PM1 (ultrafine particles) | Fair | 23.3/100 |
Tomorrow - 15 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Poor | 60.6/100 |
| PM2.5 (fine particles) | Moderate | 49.1/100 |
| PM10 (coarse particles) | Poor | 60.4/100 |
| NO2 (nitrogen dioxide) | Good | 0.3/100 |
| O3 (ozone) | Good | 12.8/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.8/100 |
| PM1 (ultrafine particles) | Good | 18.6/100 |
Local Environmental Conditions
Around the center of Guadalajara, dense development means road traffic is the main local source of nitrogen dioxide and fine particles. Lying in the Atemajac Valley at around 1,550 m, the area is prone to temperature inversions that hold pollutants near the ground when winds drop. Local sources include manufacturing. Air arriving from elsewhere in the region adds to what is produced locally.
Warm, sunny weather from March to September, around 25°C at its peak, raises afternoon ozone levels. From December to February, cooler, still nights at around 17°C allow pollution to collect in the valley. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Frequently Asked Questions About Air Quality in Jalisco
Is air quality bad in Guadalajara right now?
On 14 October 2026, overall air quality in Guadalajara is very poor. AQI is the main air quality indicator at 91.2/100. Pollution peaks around 6:00 PM (PM2.5: 100/100).
Will air quality be worse tomorrow in Guadalajara?
On 15 October 2026, air quality conditions in Guadalajara will be better than today, with AQI forecast at poor at 60.6/100. Pollution peaks around 12:00 AM (PM10: 100/100).
When is air pollution at its worst in Guadalajara?
Warm, sunny weather from March to September, around 25°C at its peak, raises afternoon ozone levels. From December to February, cooler, still nights at around 17°C allow pollution to collect in the valley. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
Are air quality levels in Guadalajara 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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |