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Air Quality Index (AQI) in Arroio do Meio, Brazil ๐Ÿ‡ง๐Ÿ‡ท

Air quality in Arroio do Meio is currently 22 on the US AQI scale, rated Good.

Moderate or heavy rain shower
20ยฐC
Moderate or heavy rain shower
AQI INDEX
22
US EPA Standard

PM 2.5 Level
4.0
ยตg/mยณ

Air Quality
Good
The current Air Quality Index (AQI) in Arroio do Meio is recorded at 22 as of 11:36โ€ฏAM local time this Monday, September 21, 2026. This real-time AQI score is estimated from the current PM2.5 concentration. According to the US EPA health standard, air quality in Arroio do Meio currently falls into the Good category. With a fine particulate matter (PM2.5) concentration of 4.0 ยตg/mยณ, 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. A good day to be outside, so see today's sunrise and sunset and the local weather. 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 Arroio do Meio Residents

โœ…

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

Arroio do Meio Air Pollution: Detailed Pollutant Breakdown

๐ŸŒฟ
Good news โ€” Arroio do Meio's air today is cleaner than a single cigarette (about 0.2).
Based on the Berkeley Earth estimate that ~22 ยตg/mยณ of PM2.5 over a day is about one cigarette. Today's PM2.5 in Arroio do Meio is 4.0 ยตg/mยณ.
PM 2.5
4.0
ยตg/mยณ
PM 10
4.0
ยตg/mยณ
Nitrogen Dioxide (NO2)
2.4
ยตg/mยณ
Ozone (O3)
75.0
ยตg/mยณ
Carbon Monoxide (CO)
336.0
ยตg/mยณ
Sulfur Dioxide (SO2)
0.4
ยตg/mยณ

Current Weather in Arroio do Meio

๐ŸŒก๏ธ 20ยฐC (Feels like 22ยฐ)
๐ŸŒฌ๏ธ 5 km/h SW
๐Ÿ’ง 96% Humidity
๐Ÿงญ 1006 hPa
๐Ÿ‘๏ธ 7.0 km Visibility
โ˜€๏ธ UV Index: 0.1
๐ŸŒ… Sunrise: 06:18 AM
๐ŸŒ‡ Sunset: 06:23 PM
๐ŸŒก๏ธ Dew Point: 19ยฐC

Arroio do Meio's Main Air Pollutant Today

The main concern in Arroio do Meio right now is Ozone at 75.0 ยตg/mยณ, about 0.8x the WHO 24-hour guideline.

Air Quality Health Advice for Arroio do Meio

General publicAir quality is good. It is a great day to be active outside.
Sensitive groupsAir quality is good. Sensitive groups can enjoy normal outdoor activity.

Air Quality in Other Cities in Brazil

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 Arroio do Meio

What is the air quality (AQI) in Arroio do Meio right now?

The current air quality index in Arroio do Meio is 22 โ€” categorised as Good.

Is the air in Arroio do Meio safe to breathe today?

Today's air quality in Arroio do Meio is rated Good on the US EPA scale.

What is the PM2.5 level in Arroio do Meio right now?

The fine-particle (PM2.5) concentration in Arroio do Meio is currently 4.0 ยตg/mยณ. PM2.5 is the most health-relevant pollutant โ€” the WHO 24-hour guideline is 15 ยตg/mยณ.

What is the PM10 level in Arroio do Meio right now?

The coarse-particle (PM10) concentration in Arroio do Meio is currently 4.0 ยตg/mยณ.

What is the main pollutant in Arroio do Meio right now?

The dominant pollutant in Arroio do Meio right now is Ozone at 75.0 ยตg/mยณ.

Is it safe to exercise outdoors in Arroio do Meio today?

With air quality currently rated Good, outdoor exercise in Arroio do Meio is generally considered safe for most people.

How to Read the Air Quality Index for Arroio do Meio

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 Conditions Explained

Is the AQI in Arroio do Meio safe today?

Today's AQI is 22, which is categorized as Good. This means the air quality is good for the general population.