Air Quality Index (AQI) in Igaraçu do Tietê, Brazil 🇧🇷

Air quality in Igaraçu do Tietê is currently 151 on the US AQI scale, rated Unhealthy.

21°C

Smoky haze

The current Air Quality Index (AQI) in Igaraçu do Tietê is recorded at 151 as of 4:47 AM local time this Friday, September 4, 2026. This real-time AQI score is estimated from the current PM2.5 concentration. According to the US EPA health standard, air quality in Igaraçu do Tietê currently falls into the Unhealthy category. High pollution levels have been detected, with PM2.5 reaching 56.0 µg/m³. This unhealthy AQI reading suggests that everyone may begin to experience health effects. Track the local weather and limit time outdoors until levels improve. For the AQI across entire Brazil, you can also view the Air Quality Index for Brazil covering other major urban centers and local monitoring stations.

Health Recommendations for Igaraçu do Tietê Residents

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Health alert: everyone may begin to experience health effects. Members of sensitive groups should avoid all outdoor physical activity, and others should minimize time spent outside in Igaraçu do Tietê.

Igaraçu do Tietê Air Pollution: Detailed Pollutant Breakdown

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Breathing Igaraçu do Tietê's air today is roughly like smoking 2.5 cigarettes.

Based on the Berkeley Earth estimate that ~22 µg/m³ of PM2.5 over a day is about one cigarette. Today's PM2.5 in Igaraçu do Tietê is 56.0 µg/m³.

PM 2.5

56.0

µg/m³

PM 10

57.2

µg/m³

Nitrogen Dioxide (NO2)

46.0

µg/m³

Ozone (O3)

54.0

µg/m³

Carbon Monoxide (CO)

570.0

µg/m³

Sulfur Dioxide (SO2)

4.8

µg/m³

Current Weather in Igaraçu do Tietê

🌡️ 21°C (Feels like 20°)

🌬️ 4 km/h SSW

💧 43% Humidity

🧭 1016 hPa

👁️ 10.0 km Visibility

☀️ UV Index: 0.0

🌅 Sunrise: 06:22 AM

🌇 Sunset: 06:04 PM

🌡️ Dew Point: 8°C

Igaraçu do Tietê's Main Air Pollutant Today

The main concern in Igaraçu do Tietê right now is PM2.5 at 56.0 µg/m³, about 3.7x the WHO 24-hour guideline.

Air Quality Health Advice for Igaraçu do Tietê

General public	Reduce prolonged or heavy exertion outdoors and take more breaks.
Sensitive groups	Sensitive groups should avoid prolonged or heavy exertion and stay indoors when possible.

Air Quality in Other Cities in Brazil

São Paulo Rio de Janeiro Brasilia Belo Horizonte Salvador Fortaleza Manaus Curitiba Recife Goiânia Belém Porto Alegre Guarulhos Maceió Campinas São Luís Campo Grande Natal Teresina Nova Iguaçu Duque de Caxias João Pessoa São Bernardo do Campo São José dos Campos Ribeirão Preto Jaboatão Sorocaba Osasco Aracaju Santo André

Browse Air Quality in Brazil by cities in alphabetical order:

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Air Quality in Brazil ›

Frequently Asked Questions about Air Quality in Igaraçu do Tietê

What is the air quality (AQI) in Igaraçu do Tietê right now?

The current air quality index in Igaraçu do Tietê is 151 — categorised as Unhealthy.

Is the air in Igaraçu do Tietê safe to breathe today?

Today's air quality in Igaraçu do Tietê is rated Unhealthy on the US EPA scale.

What is the PM2.5 level in Igaraçu do Tietê right now?

The fine-particle (PM2.5) concentration in Igaraçu do Tietê is currently 56.0 µg/m³. PM2.5 is the most health-relevant pollutant — the WHO 24-hour guideline is 15 µg/m³.

What is the PM10 level in Igaraçu do Tietê right now?

The coarse-particle (PM10) concentration in Igaraçu do Tietê is currently 57.2 µg/m³.

What is the main pollutant in Igaraçu do Tietê right now?

The dominant pollutant in Igaraçu do Tietê right now is PM2.5 at 56.0 µg/m³.

Is it safe to exercise outdoors in Igaraçu do Tietê today?

Air quality in Igaraçu do Tietê is Unhealthy — sensitive groups should consider reducing prolonged outdoor exertion.

How to Read the Air Quality Index for Igaraçu do Tietê

Good (0-50)

Air is fresh and healthy. Safe for all outdoor activities.

Moderate (51-100)

Acceptable air quality, though sensitive groups should monitor comfort.

Unhealthy (Sensitive) (101-150)

Vulnerable groups (children, elderly) should limit outdoor exertion.

Unhealthy (151-200)

Everyone begins to experience health effects. Stay indoors where possible.

Very Unhealthy (201-300)

Significant health impact for entire population. Emergency conditions.

Hazardous (301+)

Serious health alert: everyone may experience serious life-threatening effects.

Good (0-12)

Fine particles are at minimal, safe levels. Air is optimal.

Moderate (12-35)

Acceptable air, but haze may be present in urban areas.

Sensitive (35-55)

Individuals with heart or lung disease should limit activity.

Unhealthy (55-150)

Particulate levels high enough to cause respiratory irritation.

Very Unhealthy (150-250)

Heavy haze. High risk to cardiovascular health for the public.

Hazardous (250+)

Lethal particulate concentrations. Critical neurological and lung risk.

Good (0-54)

Low levels of dust and coarse particles. Environment is safe.

Moderate (55-154)

Coarse particles may trigger coughing in sensitive groups.

Sensitive (155-254)

Visible dust pollution. Sensitive groups should avoid heavy labor.

Unhealthy (255-354)

Widespread respiratory impacts likely for the population.

Very Unhealthy (355-424)

Dangerous dust and debris levels. Significant warnings issued.

Hazardous (425+)

Extremely high concentrations. Stay inside with filtration.

Good (0-54)

Surface ozone levels are within a safe, natural range.

Moderate (55-70)

Acceptable air, but sensitive individuals may feel chest tightness.

Sensitive (71-85)

Rising ozone can trigger airway inflammation in active children.

Unhealthy (86-105)

Avoid heavy outdoor work during the hottest part of the day.

Very Unhealthy (106-200)

Serious lung function reduction likely across the public.

Hazardous (201+)

Emergency ozone levels. Risk of permanent lung tissue damage.

Good (0-53)

Nitrogen levels are optimal. Safe for everyone.

Moderate (54-100)

Typical background levels for high-density urban areas.

Sensitive (101-360)

Increased risk of respiratory infections for vulnerable groups.

Unhealthy (361-649)

Significant airway inflammation likely near traffic zones.

Very Unhealthy (650-1249)

Acute respiratory distress potential. High-risk groups stay indoors.

Hazardous (1250+)

Toxic concentrations. Immediate health precautions required.

Good (0-4.4)

Carbon Monoxide levels are clean and non-toxic.

Moderate (4.5-9.4)

Acceptable; may affect those with specific heart conditions.

Sensitive (9.5-12.4)

Reduced oxygen delivery to the heart may occur.

Unhealthy (12.5-15.4)

Headaches and fatigue may occur in urban canyons.

Very Unhealthy (15.5-30.4)

Significant cardiovascular distress. Mental confusion possible.

Hazardous (30.5+)

Lethal potential. Immediate risk of neurological collapse.

Good (0-35)

Optimal air quality with no sulfur detection.

Moderate (36-75)

Acceptable air; minor odors possible near industry.

Sensitive (76-185)

Bronchoconstriction possible for active asthmatics.

Unhealthy (186-304)

Respiratory distress likely for the wider population.

Very Unhealthy (305-604)

Significant wheezing and shortness of breath likely.

Hazardous (605+)

Extreme respiratory danger. Significant life risk.

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

How is this AQI calculated?

The primary Air Quality Index (AQI) shown above is calculated using the US EPA Linear Interpolation formula based on PM2.5 concentration (Fine Particulate Matter).

Formula: Ip = [(Ihi - Ilow) / (Chi - Clow)] * (Cp - Clow) + Ilow

Current PM2.5: 56.0 µg/m³
Calculation: Your city falls into the "Unhealthy" category (Category 4).

Current Conditions Explained

Is the AQI in Igaraçu do Tietê safe today?

Today's AQI is 151, which is categorized as Unhealthy. This means the air quality is unhealthy for the general population.