Ústí nad Labem air quality now

Czechia · The summary is refreshed every 15 minutes.

Now

No current value: fewer than four sensors at different places are reporting now.

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Ústí nad Labem, November 10, 2026: daily mean PM2.5 21 µg/m³ (5 sensors), level “Moderate” — as in the Atmy Data Hub. Open methodology and data in JSON: Methodology and data sources · JSON

There are not enough fresh measurements for Ústí nad Labem right now. From 10:00 to 21:00 local time the city mean PM2.5 rose from 20.4 to 28.0 µg/m³.

Light wind (0 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion). Cold weather (4°C) possibly means more heating, a common source of particles.

Weather now: rain, 4°C, wind 0 m/s, humidity 94%. No major change in the wind is expected in the coming hours.

Written automatically at 22:10 local time (21:10 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

0 m/s

Wind, NW

5.9 mm

Precipitation today

Ústí nad Labem: 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 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 5 of 13 cities in Czechia and No. 290 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

Now2020
23.0007.0014.0022.00

Pollution accumulation forecast

Today — November 11

4°/3°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 41/100Morning
  3. 9/100Day
  4. 20/100Evening

Thursday — November 12

9°/4°

Index by time of day

55/100Moderate

  1. 55/100Night
  2. 41/100Morning
  3. 9/100Day
  4. 20/100Evening

Friday — November 13

8°/1°

Index by time of day

59/100Moderate

  1. 59/100Night
  2. 44/100Morning
  3. 8/100Day
  4. 19/100Evening

Saturday — November 14

8°/-1°

Index by time of day

46/100Moderate

  1. 46/100Night
  2. 39/100Morning
  3. 9/100Day
  4. 28/100Evening

Sunday — November 15

3°/-2°

Index by time of day

57/100Moderate

  1. 57/100Night
  2. 42/100Morning
  3. 9/100Day
  4. 23/100Evening

Monday — November 16

4°/0°

Index by time of day

51/100Moderate

  1. 51/100Night
  2. 40/100Morning
  3. 8/100Day
  4. 18/100Evening

Forecast of conditions that trap pollution near the surface

Weather

4°

Rain. Feels like 2°C

  1. MorningRain3°C93%
  2. DayRain4°C88%
  3. EveningCloudy4°C92%

Wind

0m/sWind from the NW

2m/sWind gusts

Wind force: 0

Light wind is expected over the next few hours.

10-day weather forecast for Ústí nad Labem

Czechia

  1. TodayNov 11Rain4°C3°C
  2. ThuNov 12Rain9°C4°C
  3. FriNov 13Cloudy8°C1°C
  4. SatNov 14Partly cloudy8°C-1°C
  5. SunNov 15Rain3°C-2°C
  6. MonNov 16Rain4°C0°C
  7. TueNov 17Rain9°C0°C
  8. WedNov 18Cloudy9°C7°C
  9. ThuNov 19Rain8°C4°C
  10. FriNov 20Rain6°C3°C

Czechia: sensors in total

112

  1. PragueCzechia

    38

  2. LiberecCzechia

    15

  3. České BudějoviceCzechia

    9

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: Ústí nad Labem

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

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

Czechia · City ranking · All pilot cities

Questions

What was the air quality in Ústí nad Labem 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 5 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 5 of 13 cities in Czechia and No. 290 of 676 worldwide, from the most polluted.

What is the air quality in Ústí nad Labem right now?

Fresh data for Ústí nad Labem are insufficient (last update: 21:45 local time, 20:45 UTC). Open the map for the latest readings of individual sensors.

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