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

2 weather warnings in effect for Romania ⚠️ Other hazard⛈️ Thunderstorms

Latest air quality data: Bacău

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

particulate matter (PM2.5) dust - 5 (Good)
particulate matter (PM10) suspended dust - 7 (Good)
ozone (O3) - 61 (Good)
nitrogen dioxide (NO2) - 3 (Good)
sulfur dioxide (SO2) - 0 (Good)
carbon monoxide (CO) - 161 (Good)

Real-time Air Quality Index (AQI) for Bacău, Thursday, August 27, 2026: 1.

AQI 1 Good

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

Today (Thursday, August 27, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Bacău.

What is the current level of PM2.5 in Bacău? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 5 (Good) For comparison, the highest level of PM2.5 in Bacău in the last 7 days was: 7 (Tuesday, August 25, 2026) and the lowest: 5 (Wednesday, August 26, 2026).

What is the level of PM10 today in Bacău? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Bacău is: 7 (Good)

How is the O3 level today in Bacău? (ozone (O3))
61 (Good)

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

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

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

Current data Thursday, August 27, 2026 at 4:00 AM

PM2,5 5 (Good)

PM10 7 (Good)

O3 61 (Good)

NO2 3 (Good)

SO2 0 (Good)

CO 161 (Good)

Data on air pollution from recent days in Bacău

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	6 Good	5 Good	7 Good	6 Good	5 Good	6 Good	7 Good	6 Good
pm10	7 Good	7 Good	10 Good	8 Good	6 Good	10 Good	10 Good	9 Good
o3	65 Good	69 Good	67 Good	65 Good	76 Moderate	77 Moderate	76 Moderate	65 Good
no2	4 Good	5 Good	5 Good	4 Good	2 Good	2 Good	4 Good	5 Good
so2	0 Good	1 Good	1 Good	1 Good	1 Good	0 Good	1 Good	1 Good
co	172 Good	164 Good	157 Good	153 Good	151 Good	152 Good	162 Good	167 Good

data source »

Quality of life in Bacău

Green and Parks in the City

Bacău 29%

Moldova: 67% Bulgaria: 66% Serbia: 55% Hungary: 59% Slovakia: 58%

particulate matter PM2.5

Bacău 14 (Moderate)

Pleasure of spending time in the city

Bacău 65%

Moldova: 56% Bulgaria: 50% Serbia: 53% Hungary: 65% Slovakia: 73%

particulate matter PM10

Bacău 19 (Good)

Air Pollution

Bacău 33%

Moldova: 53% Bulgaria: 68% Serbia: 65% Hungary: 49% Slovakia: 35%

Garbage Disposal

Bacău 36%

Moldova: 35% Bulgaria: 44% Serbia: 39% Hungary: 65% Slovakia: 65%

Availability and quality of drinking water

Bacău 54%

Moldova: 46% Bulgaria: 70% Serbia: 64% Hungary: 80% Slovakia: 87%

Cleanliness and tidiness

Bacău 18%

Moldova: 35% Bulgaria: 42% Serbia: 37% Hungary: 52% Slovakia: 57%

Noise and Light pollution

Bacău 54%

Moldova: 53% Bulgaria: 51% Serbia: 51% Hungary: 45% Slovakia: 41%

Water Pollution

Bacău 39%

Moldova: 63% Bulgaria: 41% Serbia: 52% Hungary: 30% Slovakia: 27%

Source: Numbeo

Bacău

Thursday, August 27, 2026 at 4:00 AM

PM2,5 5.1 (Good)

particulate matter (PM2.5) dust

PM10 7.2 (Good)

particulate matter (PM10) suspended dust

O3 61 (Good)

ozone (O3)

NO2 3.2 (Good)

nitrogen dioxide (NO2)

SO2 0.2 (Good)

sulfur dioxide (SO2)

CO 161 (Good)

carbon monoxide (CO)

Bacău

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	5.6	7.1	5.9	4.6	5.6	6.9	5.2	5.7
pm10	8.5	9.9	9.7	6.2	8.1	9.6	7.5	7.2
o3	65	76	77	76	65	67	69	65
no2	5.3	3.5	2.4	2	3.9	4.6	4.8	4.3
so2	0.57	0.83	0.49	0.59	0.63	0.65	0.53	0.49
co	167	162	152	151	153	157	164	172

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

🌦️ Weather · 16-day Forecast — Romania

16-day weather forecast for Romania: today around 32°C (rain), lows near 15°C. Daily temperature and conditions, updated every day. A moderate breeze (about 13 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Romania

The UV index in Romania today is 5.9 (moderate) — unprotected fair skin can burn in about 35 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Bacău — compare nearby locations.

Iași 5 µg/m³
Botoșani 7 µg/m³
Brașov 11 µg/m³
Bucharest 7 µg/m³
Cluj-Napoca 8 µg/m³
Timișoara 9 µg/m³
Craiova 9 µg/m³
Constanța 7 µg/m³

Frequently asked questions

Is the air safe to breathe in Bacău today?

The current average PM2.5 across Bacău is about 5 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Bacău?

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

Which day last week had the worst air in Bacău?

Over the past week, the highest daily PM2.5 in Bacău was recorded on Friday, August 21 (about 7 µg/m³).

What is the UV index in Bacău today?

The UV index in Bacău today is 5.9 (moderate) — unprotected fair skin can burn in about 35 minutes.

Does today's wind help disperse smog in Bacău?

A moderate breeze (about 13 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.