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

Latest air quality data: Teresina

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

particulate matter (PM2.5) dust - 21 (Moderate)
particulate matter (PM10) suspended dust - 23 (Moderate)
ozone (O3) - 39 (Good)
nitrogen dioxide (NO2) - 26 (Good)
sulfur dioxide (SO2) - 3 (Good)
carbon monoxide (CO) - 324 (Good)

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

AQI 2 Moderate

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

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

What is the current level of PM2.5 in Teresina? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 21 (Moderate) For comparison, the highest level of PM2.5 in Teresina in the last 7 days was: 15 (Saturday, August 22, 2026) and the lowest: 7 (Tuesday, August 25, 2026).

What is the level of PM10 today in Teresina? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Teresina is: 23 (Moderate)

How is the O3 level today in Teresina? (ozone (O3))
39 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
26 (Good)

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

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

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

PM2,5 21 (Moderate)

PM10 23 (Moderate)

O3 39 (Good)

NO2 26 (Good)

SO2 3 (Good)

CO 324 (Good)

Data on air pollution from recent days in Teresina

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	10 Good	7 Good	11 Good	9 Good	15 Moderate	11 Good	7 Good	7 Good
pm10	11 Good	8 Good	12 Good	10 Good	17 Good	13 Good	9 Good	10 Good
o3	62 Good	61 Good	64 Good	67 Good	66 Good	61 Good	57 Good	54 Good
no2	9 Good	8 Good	9 Good	6 Good	10 Good	11 Good	7 Good	5 Good
so2	1 Good	1 Good	1 Good	1 Good	2 Good	1 Good	1 Good	1 Good
co	191 Good	165 Good	190 Good	141 Good	162 Good	198 Good	131 Good	139 Good

data source »

Teresina

Wednesday, August 26, 2026 at 10:00 PM

PM2,5 21 (Moderate)

particulate matter (PM2.5) dust

PM10 23 (Moderate)

particulate matter (PM10) suspended dust

O3 39 (Good)

ozone (O3)

NO2 26 (Good)

nitrogen dioxide (NO2)

SO2 2.8 (Good)

sulfur dioxide (SO2)

CO 324 (Good)

carbon monoxide (CO)

Teresina

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	7.4	7	11	15	8.8	11	6.8	9.9
pm10	9.8	8.7	13	17	10	12	7.7	11
o3	54	57	61	66	67	64	61	62
no2	5.3	6.9	11	9.7	6.1	8.7	8.2	9.2
so2	0.78	0.91	1.4	1.6	1.3	1.5	1.2	1.3
co	139	131	198	162	141	190	165	191

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

🌦️ Weather · 16-day Forecast — Teresina

16-day weather forecast for Teresina: today around 39°C (clear sky), lows near 25°C. Daily temperature and conditions, updated every day. A moderate breeze (about 12 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Teresina

The UV index in Teresina today is 8.5 (very high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Teresina — compare nearby locations.

Fortaleza 11 µg/m³
Belém 12 µg/m³
Natal 9 µg/m³
Maceió 14 µg/m³
Recife 13 µg/m³
Salvador 17 µg/m³
Brasília 16 µg/m³
São Paulo 62 µg/m³

Frequently asked questions

Is the air safe to breathe in Teresina today?

The current average PM2.5 across Teresina is about 21 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 Teresina?

Right now PM2.5 in Teresina averages about 21 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 Teresina?

Over the past week, the highest daily PM2.5 in Teresina was recorded on Saturday, August 22 (about 15 µg/m³).

What is the UV index in Teresina today?

The UV index in Teresina today is 8.5 (very high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Teresina?

A moderate breeze (about 12 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.