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

Latest air quality data: Curitiba

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

particulate matter (PM2.5) dust - 18 (Moderate)
particulate matter (PM10) suspended dust - 19 (Good)
ozone (O3) - 9 (Good)
nitrogen dioxide (NO2) - 41 (Moderate)
sulfur dioxide (SO2) - 7 (Good)
carbon monoxide (CO) - 342 (Good)

Real-time Air Quality Index (AQI) for Curitiba, Wednesday, August 26, 2026: 2.

AQI 2 Moderate

What is the air quality in Curitiba today? Is the air polluted in Curitiba?. Is there smog?

Today (Wednesday, August 26, 2026) air quality is moderate in Curitiba. Some pollutants in Curitiba may slightly affect very few hypersensitive individuals. Air pollutants in Curitiba may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Curitiba? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 18 (Moderate) For comparison, the highest level of PM2.5 in Curitiba in the last 7 days was: 13 (Wednesday, August 26, 2026) and the lowest: 5 (Monday, August 24, 2026).

What is the level of PM10 today in Curitiba? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Curitiba is: 19 (Good)

How is the O3 level today in Curitiba? (ozone (O3))
9 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
41 (Moderate)

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

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

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

PM2,5 18 (Moderate)

PM10 19 (Good)

O3 9 (Good)

NO2 41 (Moderate)

SO2 7 (Good)

CO 342 (Good)

Data on air pollution from recent days in Curitiba

index	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20	2026-08-19
pm25	13 Moderate	7 Good	5 Good	8 Good	9 Good	9 Good	13 Moderate	13 Moderate
pm10	15 Good	9 Good	7 Good	9 Good	9 Good	9 Good	13 Good	13 Good
o3	40 Good	52 Good	61 Good	64 Good	44 Good	58 Good	93 Moderate	89 Moderate
no2	22 Good	11 Good	5 Good	7 Good	17 Good	12 Good	8 Good	16 Good
so2	6 Good	3 Good	3 Good	4 Good	4 Good	3 Good	4 Good	6 Good
co	293 Good	160 Good	131 Good	149 Good	221 Good	246 Good	227 Good	285 Good

data source »

Quality of life in Curitiba

Green and Parks in the City

Curitiba 91%

Paraguay: 46% Bolivia: 55% Montenegro: 53% Suriname: 40% Uruguay: 65%

particulate matter PM2.5

Curitiba 14 (Moderate)

Pleasure of spending time in the city

Curitiba 83%

Paraguay: 49% Bolivia: 40% Montenegro: 69% Suriname: 63% Uruguay: 67%

particulate matter PM10

Curitiba 31 (Moderate)

Air Pollution

Curitiba 27%

Paraguay: 56% Bolivia: 64% Montenegro: 40% Suriname: 39% Uruguay: 29%

Garbage Disposal

Curitiba 77%

Paraguay: 30% Bolivia: 34% Montenegro: 42% Uruguay: 34%

Availability and quality of drinking water

Curitiba 81%

Paraguay: 57% Montenegro: 71% Suriname: 64% Uruguay: 73%

Cleanliness and tidiness

Curitiba 80%

Paraguay: 26% Bolivia: 32% Montenegro: 51% Suriname: 36% Uruguay: 38%

Noise and Light pollution

Curitiba 46%

Paraguay: 52% Bolivia: 59% Montenegro: 32% Suriname: 34% Uruguay: 48%

Water Pollution

Curitiba 49%

Paraguay: 65% Bolivia: 66% Montenegro: 38% Suriname: 57% Uruguay: 46%

Source: Numbeo

Curitiba

Wednesday, August 26, 2026 at 10:00 PM

PM2,5 18 (Moderate)

particulate matter (PM2.5) dust

PM10 19 (Good)

particulate matter (PM10) suspended dust

O3 9 (Good)

ozone (O3)

NO2 41 (Moderate)

nitrogen dioxide (NO2)

SO2 7 (Good)

sulfur dioxide (SO2)

CO 342 (Good)

carbon monoxide (CO)

Curitiba

index	2026-08-19	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26
pm25	13	13	8.7	8.8	7.9	5.3	7.4	13
pm10	13	13	9	9.3	8.8	6.9	9.1	15
o3	89	93	58	44	64	61	52	40
no2	16	8.2	12	17	7.2	5.1	11	22
so2	6.1	4.3	2.6	4.2	4.1	2.5	3.4	5.9
co	285	227	246	221	149	131	160	293

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ 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 Curitiba — compare nearby locations.

Guarulhos 73 µg/m³
Campinas 58 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
Brasília 16 µg/m³

Frequently asked questions

Is the air safe to breathe in Curitiba today?

The current average PM2.5 across Curitiba is about 18 µg/m³, rated “Moderate”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.

What is the current PM2.5 level in Curitiba?

Right now PM2.5 in Curitiba averages about 18 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Curitiba?

Over the past week, the highest daily PM2.5 in Curitiba was recorded on Wednesday, August 26 (about 13 µg/m³).

What is the UV index in Curitiba today?

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

Does today's wind help disperse smog in Curitiba?

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.