Guarulhos: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

Pollution and air quality forecast for Guarulhos. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Guarulhos:

1. particulate matter (PM2.5) dust - 73 (Unhealthy)
2. particulate matter (PM10) suspended dust - 73 (Unhealthy for Sensitive Groups)
3. ozone (O3) - 0 (Good)
4. nitrogen dioxide (NO2) - 128 (Unhealthy for Sensitive Groups)
5. sulfur dioxide (SO2) - 25 (Good)
6. carbon monoxide (CO) - 892 (Good)

Real-time Air Quality Index (AQI) for Guarulhos, Wednesday, August 26, 2026: 4.

What is the current level of PM2.5 in Guarulhos? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 73 (Unhealthy) For comparison, the highest level of PM2.5 in Guarulhos in the last 7 days was: 51 (Wednesday, August 19, 2026) and the lowest: 8 (Monday, August 24, 2026).

What is the level of PM10 today in Guarulhos? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Guarulhos is: 73 (Unhealthy for Sensitive Groups)

How is the O3 level today in Guarulhos? (ozone (O3))
0 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
128 (Unhealthy for Sensitive Groups)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
25 (Good)

How high is the CO level? (carbon monoxide (CO))
892 (Good)

Current data Wednesday, August 26, 2026 at 10:00 PM

Quality of life in Guarulhos

Guarulhos

Wednesday, August 26, 2026 at 10:00 PM

🌦️ Weather · 16-day Forecast — Brazil

16-day weather forecast for Brazil: today around 40°C (partly cloudy), lows near 22°C. Daily temperature and conditions, updated every day. A moderate breeze (about 9 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Brazil

The UV index in Brazil today is 7.9 (high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Guarulhos — compare nearby locations.

• Campinas 58 µg/m³
• Curitiba 18 µg/m³
• Goiânia 19 µg/m³
• São Paulo 62 µg/m³
• Rio de Janeiro 23 µg/m³
• Salvador 17 µg/m³
• Fortaleza 11 µg/m³
• Belo Horizonte 7 µg/m³

Frequently asked questions

Is the air safe to breathe in Guarulhos today?

The current average PM2.5 across Guarulhos is about 73 µg/m³, rated “Unhealthy”. Sensitive groups should limit time outdoors and consider a mask; everyone should reduce prolonged exertion.

What is the current PM2.5 level in Guarulhos?

Right now PM2.5 in Guarulhos averages about 73 µg/m³ (“Unhealthy”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Guarulhos?

Over the past week, the highest daily PM2.5 in Guarulhos was recorded on Wednesday, August 19 (about 51 µg/m³).

What is the UV index in Guarulhos today?

The UV index in Guarulhos today is 7.9 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Guarulhos?

A moderate breeze (about 9 km/h) is partially dispersing pollutants today.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.