🇧🇷 Air Quality Index (AQI) in Paulínia, Brazil

Partly Cloudy
22°C
Partly Cloudy
AQI INDEX
34
US EPA Standard

PM 2.5 Level
6.1
µg/m³

US EPA Index
1
Good
The current Air Quality Index (AQI) in Paulínia is recorded at 34 as of 2 o'clock in the afternoon local time this Wednesday, June 3, 2026. This real-time AQI score is based on the highest-risk pollutant measured by local monitoring stations. According to the US EPA health standard, air quality in Paulínia currently falls into the Good category. With a fine particulate matter (PM2.5) concentration of 6.1 µg/m³, the air pollution levels are considered minimal. This AQI rating indicates that the air is fresh and healthy for the general public, including children and those with respiratory sensitivities. 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 Paulínia Residents

Air quality is considered satisfactory, and air pollution poses little or no risk. It is a great day for outdoor activities in Paulínia.

Paulínia Air Pollution: Detailed Pollutant Breakdown

PM 2.5
6.1
µg/m³
PM 10
6.3
µg/m³
Nitrogen Dioxide (NO2)
1.1
µg/m³
Ozone (O3)
109.0
µg/m³
Carbon Monoxide (CO)
141.0
µg/m³
Sulfur Dioxide (SO2)
3.3
µg/m³

Current Weather in Paulínia

🌡️ 22°C (Feels like 24°)
🌬️ 10 km/h SE
💧 61% Humidity
🧭 1025 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 3.5
🌅 Sunrise: 06:42 AM
🌇 Sunset: 05:31 PM
🌡️ Dew Point: 11°C

How to Read the Air Quality Index for Paulínia

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

Note: While several pollutants (O3, NO2, SO2) are monitored, PM2.5 is used as the primary "driver" for the main index value as it typically represents the highest health risk.

Frequently Asked Questions

What is the main cause of air pollution in Paulínia?

Pollution in Paulínia is primarily driven by 10.4 km/h SE winds, local traffic emissions, and industrial activity, which influence the current PM2.5 concentration of 6.1 µg/m³.

Is the AQI in Paulínia safe today?

Today's AQI is 34, which is categorized as Good. This means the air quality is good for the general population.

Air Quality in Paulínia — FAQ

Answers refreshed based on the current AQI reading for Paulínia.

What is the current air quality (AQI) in Paulínia?
Right now the Air Quality Index in Paulínia, Brazil reads 34 on the US EPA 0-500 scale, categorised as “Good”. The dominant pollutant driving this reading is fine particulate matter (PM2.5).
Is the air safe to breathe in Paulínia today?
With an AQI of 34 (Good), the answer depends on category. Good (0-50) is safe for everyone. Moderate (51-100) is fine for most people; sensitive groups should limit prolonged outdoor exertion. Anything above 100 raises risks progressively for the general public, with Hazardous (>300) warranting masks or staying indoors.
What is the PM2.5 level in Paulínia right now?
Fine particulate matter (PM2.5) in Paulínia is currently 6.1 μg/m³. The WHO recommends an annual average below 5 μg/m³ and a 24-hour mean below 15 μg/m³ for healthy air.
What does AQI actually measure?
AQI summarises concentrations of six common pollutants — PM2.5, PM10, Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2) and Carbon Monoxide (CO) — into a single 0-500 score using piecewise linear breakpoints set by the US Environmental Protection Agency. The worst-scoring pollutant sets the overall index.
Where does the AQI data for Paulínia come from?
Real-time readings come from ground-based monitoring stations operated by national environmental agencies in Brazil. The data is refreshed every 15-60 minutes via WeatherAPI.com and aggregated with the same EPA AQI formula used by AirNow.
Should I wear a mask outside today?
With an AQI of 34 (Good) in Paulínia, masks are recommended above 150 (Unhealthy). N95 / FFP2 respirators block the PM2.5 particles that cause the most damage; cloth masks help only marginally. People with asthma, heart disease or pregnancy should consult their doctor for any AQI above 100.

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