Białystok air quality now

Poland · The summary is refreshed every 15 minutes.

November 11

The air is moderate now

Measured 21:00–22:58

Białystok

1°C

Cloudy

61AQI

1008

hPa

Atmospheric
pressure

94%

Humidity

Białystok, November 10, 2026: daily mean PM2.5 21 µg/m³ (4 sensors), level “Moderate” — as in the Atmy Data Hub. Now (23:00 local time): 14.3 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Białystok, PM2.5 averages 14.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from Government stations, Sensor.Community, readings from 21:00–22:58 local time (20:00–21:58 UTC), summary prepared at 23:00 local time. Median: 18.5 µg/m³; range across sensors: 0.4–20.0 µg/m³.

In Białystok the air is moderate 🟡 AQI 61. Higher than three hours ago. ☁️ +1 °C · No precipitation · Wind 2 m/s

In Białystok the air is moderate right now (approximate, US EPA scale). From 10:00 to 23:00 local time the city mean PM2.5 fell from 30.0 to 14.3 µg/m³.

Light wind (2 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion). Cold weather (1°C) possibly means more heating, a common source of particles.

Weather now: cloudy, 1°C, wind 2 m/s, humidity 94%. By 07:00 the wind is expected to pick up to 4 m/s, which may clear the air.

Written automatically at 23:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

2 m/s

Wind, SW

0.3 mm

Precipitation today

Białystok: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC = 01:00–01:00 UTC+1

21 µg/m³ Moderate

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 21 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 36 of 40 cities in Poland and No. 298 of 676 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

20/100Low · An estimate of weather conditions · not a PM2.5 forecast

Now2016
23.0007.0014.0022.00

Pollution accumulation forecast

Today — November 11

2°/1°

Index by time of day

47/100Moderate

  1. 47/100Night
  2. 33/100Morning
  3. 7/100Day
  4. 20/100Evening

Thursday — November 12

3°/1°

Index by time of day

47/100Moderate

  1. 47/100Night
  2. 31/100Morning
  3. 8/100Day
  4. 17/100Evening

Friday — November 13

4°/2°

Index by time of day

37/100Moderate

  1. 37/100Night
  2. 33/100Morning
  3. 8/100Day
  4. 19/100Evening

Saturday — November 14

6°/1°

Index by time of day

29/100Low

  1. 29/100Night
  2. 28/100Morning
  3. 7/100Day
  4. 24/100Evening

Sunday — November 15

6°/-1°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 41/100Morning
  3. 7/100Day
  4. 15/100Evening

Monday — November 16

9°/1°

Index by time of day

42/100Moderate

  1. 42/100Night
  2. 31/100Morning
  3. 4/100Day
  4. 10/100Evening

Forecast of conditions that trap pollution near the surface

Weather

1°

Cloudy. Feels like -2°C

  1. MorningRain1°C98%
  2. DayCloudy2°C91%
  3. EveningCloudy2°C93%

Wind

2m/sWind from the SW

5m/sWind gusts

Wind force: 2

Gusts up to 6 m/s are expected.

10-day weather forecast for Białystok

Poland

  1. TodayNov 11Rain2°C1°C
  2. ThuNov 12Rain3°C1°C
  3. FriNov 13Rain4°C2°C
  4. SatNov 14Cloudy6°C1°C
  5. SunNov 15Partly cloudy6°C-1°C
  6. MonNov 16Cloudy9°C1°C
  7. TueNov 17Rain8°C3°C
  8. WedNov 18Cloudy5°C0°C
  9. ThuNov 19Rain9°C3°C
  10. FriNov 20Rain7°C5°C

Where in Białystok is the air worse?

See all sensors

Highest current reading: 20.0 µg/m³ (Białystok, ul. Upalna (Podlaska Sieć Monitoringu Powietrza)). Lowest: 0.4 µg/m³ (SC #70520). The list shows every sensor, highest first.

  1. Białystok, ul. Upalna (Podlaska Sieć Monitoringu Powietrza) →20 µg/m³
  2. Białystok, ul. 42 Pułku Piechoty (Podlaska Sieć Monitoringu Powietrza) →19 µg/m³
  3. Białystok, Al. Piłsudskiego (Podlaska Sieć Monitoringu Powietrza) →18 µg/m³
  4. SC #70520 →0 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: Government stations — 3 sensors, Sensor.Community — 1 sensor.

Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.

Poland: sensors in total

701

  1. WarsawPoland

    113

  2. WrocławPoland

    80

  3. PoznanPoland

    54

Cities with the most sensors

All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.

Air quality calendar: Białystok

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

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An Atmy card with the air quality in Białystok now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.

Air quality in Białystok now — Atmy

Poland · City ranking · All pilot cities

Questions

What was the air quality in Białystok over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 21 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 36 of 40 cities in Poland and No. 298 of 676 worldwide, from the most polluted.

What is the air quality in Białystok right now?

Right now in Białystok, PM2.5 averages 14.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from Government stations, Sensor.Community, readings from 21:00–22:58 local time (20:00–21:58 UTC), summary prepared at 23:00 local time. Median: 18.5 µg/m³; range across sensors: 0.4–20.0 µg/m³.

Is it safe to be outdoors in Białystok now?

The current level is “moderate” (US EPA scale, approximate). Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.

Where in Białystok is the air worse?

Highest current reading: 20.0 µg/m³ (Białystok, ul. Upalna (Podlaska Sieć Monitoringu Powietrza)). Lowest: 0.4 µg/m³ (SC #70520). The list shows every sensor, highest first.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Data

Where do these data come from?

The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.

“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.

Source: public Atmy monitoring data. Methodology and data sources · Data terms