Fine particles
32.8µg/m³Moderate · 1 hourCAMS model • Open-Meteo
OlomoucAir quality, PM2.5 and PM10
Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.
Olomouc - latest available concentrations (November 11, 2026, 03:00 local time): PM2.5: 32.8 µg/m³, PM10: 40.4 µg/m³, O₃: 11 µg/m³, NO₂: 16.9 µg/m³, SO₂: 2.3 µg/m³, CO: 457 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Olomouc · Air pollutant concentrations
Data time: November 11, 2026 · 03:00 · local timeParticulate matter
40.4µg/m³Fair · 1 hourOzone
11µg/m³Good · 1 hourNitrogen dioxide
16.9µg/m³Fair · 1 hourSulphur dioxide
2.3µg/m³Good · 1 hourCarbon monoxide
457µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Olomouc
Olomouc - air pollution over recent days (2026-08-31 - 2026-11-10)
Concentrations of all available pollutants for this city.
PM2.5Lowest 3.25 2026-09-05Highest 29.33 2026-11-092026-08-31 - 2026-11-10
PM10Lowest 4.58 2026-09-05Highest 32.69 2026-11-092026-08-31 - 2026-11-10
O₃Lowest 29.25 2026-11-10Highest 65.83 2026-09-052026-08-31 - 2026-11-10
NO₂Lowest 2.55 2026-09-06Highest 16.88 2026-11-052026-08-31 - 2026-11-10
SO₂Lowest 0.49 2026-09-05Highest 4.85 2026-11-092026-08-31 - 2026-11-10
COLowest 137.38 2026-09-05Highest 379.04 2026-11-092026-08-31 - 2026-11-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-11-10 | 2026-11-09 | 2026-11-08 | 2026-11-07 | 2026-11-06 | 2026-11-05 | 2026-11-04 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 22.44 | 29.33 | 26.15 | 27.09 | 22.02 | 20.69 | 12.62 | 6.72 | 4.6 | 3.25 | 5.3 | 8.78 | 8.3 | 4.5 | 6.73 |
| PM10 | 24.67 | 32.69 | 28.45 | 30.55 | 25.19 | 23.91 | 14.28 | 11.4 | 8.63 | 4.58 | 7.42 | 11.88 | 11.4 | 6.73 | 9.66 |
| O₃ | 29.25 | 29.71 | 36.88 | 37.5 | 35.38 | 33.75 | 36.79 | 60.58 | 62.88 | 65.83 | 53.92 | 64 | 61.08 | 58.29 | 58.96 |
| NO₂ | 13.35 | 14.51 | 10.63 | 13.38 | 13.43 | 16.88 | 10.5 | 6.25 | 2.55 | 2.92 | 5.12 | 7.19 | 8.52 | 4.63 | 7.62 |
| SO₂ | 3.28 | 4.85 | 3.01 | 3.64 | 3.41 | 4.15 | 3.22 | 1.21 | 0.73 | 0.49 | 0.58 | 1.23 | 1.17 | 0.51 | 0.83 |
| CO | 316.29 | 379.04 | 364.17 | 347.79 | 326.58 | 316.5 | 232.79 | 182 | 160.63 | 137.38 | 145.63 | 186.17 | 194.83 | 161.67 | 167.54 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Olomouc
Olomouc - air pollution history (2017-09 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 9.97 2019-05Highest 39.5 2018-032017-09 - 2020-05
PM10Lowest 15.1 2020-05Highest 44.1 2018-022017-09 - 2020-05
NO₂Lowest 10.2 2019-06Highest 33.8 2019-022017-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 10.9 | 17.3 | 18.6 | 11.5 | 29.8 | 22.6 | 17.2 | 20.1 | 10.5 | 12 | 11.9 | 13.4 | 9.97 | 18 | 15.8 | 32.8 | 26.9 | 23.3 | 30.1 | 23.4 | 17.1 | 14.6 | 14.4 | 13 | 16.1 | 15.4 | 39.5 | 38.8 | 27.2 | 23.7 | 25 | 19 | 17 |
| PM10 | 15.1 | 25.7 | 25.9 | 15.2 | 37.9 | 30 | 23.8 | 30.4 | 19.4 | 18.7 | 20.1 | 21.1 | 15.3 | 25 | 21.5 | 44.1 | 34.5 | 28 | 40.3 | 34.6 | 25.3 | 23.7 | 22.4 | 22.1 | 25.8 | 27.2 | 41.5 | 44.1 | 29.3 | 28.4 | 28.1 | 28.9 | 22.9 |
| NO₂ | 13.2 | 19.6 | 18.3 | 20.1 | 26.8 | 23.4 | 23.6 | 25 | 17.7 | 13.8 | 14.2 | 10.2 | 14.9 | 12.9 | 18.8 | 33.8 | 28.7 | 23.5 | 24 | 24.4 | 20.9 | 16.4 | 14.1 | 13.8 | 16.2 | 23 | 29 | 27.4 | 29.3 | 26.6 | 27.8 | 22.9 | 20 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Historical data by station 1
AIR QUALITY ARCHIVE · CZ0MOLJ
CZ0MOLJ
Station code: CZ0MOLJ
Monthly monitoring station data.
PM2.5Lowest 9.97 2019-05Highest 39.5 2018-032017-09 - 2020-05
PM10Lowest 15.1 2020-05Highest 44.1 2018-022017-09 - 2020-05
NO₂Lowest 10.2 2019-06Highest 33.8 2019-022017-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 10.9 | 17.3 | 18.6 | 11.5 | 29.8 | 22.6 | 17.2 | 20.1 | 10.5 | 12 | 11.9 | 13.4 | 9.97 | 18 | 15.8 | 32.8 | 26.9 | 23.3 | 30.1 | 23.4 | 17.1 | 14.6 | 14.4 | 13 | 16.1 | 15.4 | 39.5 | 38.8 | 27.2 | 23.7 | 25 | 19 | 17 |
| PM10 | 15.1 | 25.7 | 25.9 | 15.2 | 37.9 | 30 | 23.8 | 30.4 | 19.4 | 18.7 | 20.1 | 21.1 | 15.3 | 25 | 21.5 | 44.1 | 34.5 | 28 | 40.3 | 34.6 | 25.3 | 23.7 | 22.4 | 22.1 | 25.8 | 27.2 | 41.5 | 44.1 | 29.3 | 28.4 | 28.1 | 28.9 | 22.9 |
| NO₂ | 13.2 | 19.6 | 18.3 | 20.1 | 26.8 | 23.4 | 23.6 | 25 | 17.7 | 13.8 | 14.2 | 10.2 | 14.9 | 12.9 | 18.8 | 33.8 | 28.7 | 23.5 | 24 | 24.4 | 20.9 | 16.4 | 14.1 | 13.8 | 16.2 | 23 | 29 | 27.4 | 29.3 | 26.6 | 27.8 | 22.9 | 20 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗EEA Czech Republic
Environment and quality of life ratings · Olomouc
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Olomouc | Austria | Slovakia | Poland | Germany | Slovenia |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 88% | 78% | 58% | 62% | 78% | 87% |
| particulate matter PM2.5 (µg/m³) | 22 | — | — | — | — | — |
| Pleasure of spending time in the city | 71% | 84% | 73% | 48% | 80% | 88% |
| particulate matter PM10 (µg/m³) | 28 | — | — | — | — | — |
| Air Pollution | 34% | 21% | 35% | 63% | 25% | 26% |
| Garbage Disposal | 88% | 84% | 65% | 60% | 74% | 87% |
| Availability and quality of drinking water | 94% | 91% | 87% | 65% | 82% | 96% |
| Cleanliness and tidiness | 81% | 82% | 57% | 58% | 65% | 87% |
| Noise and Light pollution | 56% | 34% | 41% | 51% | 42% | 37% |
| Water Pollution | 25% | 14% | 27% | 39% | 23% | 17% |
Air quality in nearby cities
All cities →Czech Republic↗
Brno
PM2.527.1
PM1028.3
µg/m³
PM2.5 · ModerateNO₂ 10.1O₃ 25
November 11, 202603:00
Czech Republic↗
Ostrava
PM2.529.2
PM1031.8
µg/m³
PM2.5 · ModerateNO₂ 15.6O₃ 31
November 11, 202603:00
Czech Republic↗
Prague
PM2.536.1
PM1037.4
µg/m³
PM2.5 · ModerateNO₂ 18.3O₃ 22
November 11, 202603:00
Czech Republic↗
Plzeň
PM2.529.6
PM1034.7
µg/m³
PM2.5 · ModerateNO₂ 10.9O₃ 25
November 11, 202603:00
Czech Republic · air quality in other cities
WEATHER & SURROUNDINGS
Czech Republic · weather forecast
Daily maximum and minimum temperatures. Forecast point: 49.8175, 15.473. Forecast for a country reference point; conditions in the city may differ.
Scroll the forecast to see the following days.
Czech Republic · November 8, 2026: minimum temperature -2.5°C, maximum 7.6°C. Wind: 11.9 km/h. Humidity: 68%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-11-08 | 5.5 | -2.5 | 7.6 | 0.1 | 0.3 | 3.3 | 68 | 13 |
| 2026-11-09 | 4.8 | -0.6 | 6.3 | 2.5 | 1.9 | 4.9 | 81 | 100 |
| 2026-11-10 | 3.8 | 1.1 | 4.7 | 1.1 | 2.7 | 6 | 97 | 100 |
| 2026-11-11 | 2.8 | 0.6 | 6.4 | 6.2 | 0.9 | 5.4 | 95 | 100 |
| 2026-11-12 | 9.6 | 6.4 | 12.6 | 6.5 | 0.9 | 4.1 | 91 | 100 |
| 2026-11-13 | 3.1 | 2.6 | 6.3 | 2.8 | 3 | 5.4 | 87 | 100 |
| 2026-11-14 | 4 | 0 | 6.4 | 0.5 | 0.1 | 4.1 | 78 | 22 |
| 2026-11-15 | 2.8 | 0.2 | 5.5 | 1.1 | 2.4 | 7.7 | 81 | 36 |
| 2026-11-16 | 2.2 | -0.4 | 3.9 | 2 | 0.2 | 7.7 | 73 | 9 |
| 2026-11-17 | 3.2 | 1.7 | 5.5 | 4.6 | 0.6 | 7.2 | 80 | 100 |
| 2026-11-18 | 4 | 2.7 | 5.7 | 5.7 | 3.8 | 4.2 | 94 | 100 |
| 2026-11-19 | 6.5 | 3.6 | 7.7 | 3.6 | 13.1 | 3.7 | 81 | 100 |
| 2026-11-20 | 6.4 | 4.7 | 7.9 | 7.9 | 7.4 | 5 | 90 | 100 |
| 2026-11-21 | 8.5 | 6.6 | 9.1 | 7.3 | 1.9 | 4.5 | 81 | 87 |
| 2026-11-22 | 7.7 | 5.1 | 8.1 | 5.1 | 4.3 | 5.9 | 89 | 100 |
| 2026-11-23 | 7 | 4.5 | 8.8 | 6.6 | 3.4 | 3.8 | 84 | 100 |
| 2026-11-24 | 7.5 | 5.9 | 9.1 | 6 | 4.4 | 4.1 | 78 | 100 |
| 2026-11-25 | 6.8 | 5.1 | 8.3 | 8.3 | — | 2.7 | 67 | 100 |
UV index by day · Czech Republic
Data for a country reference point. Local conditions may differ.
You can safely stay in the sun. Sunscreen only matters on very long exposure.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Czech Republic · November 10, 2026: UV index: 0.9 .
| Indicator | 2026-11-10 | 2026-11-11 | 2026-11-12 | 2026-11-13 | 2026-11-14 | 2026-11-15 | 2026-11-16 | 2026-11-17 | 2026-11-18 | 2026-11-19 | 2026-11-20 | 2026-11-21 | 2026-11-22 | 2026-11-23 | 2026-11-24 | 2026-11-25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 0.9 | 0.6 | 1.3 | 1.9 | 1.8 | 1.8 | 1.7 | 1.3 | 1.5 | 1.1 | 0.5 | 1.3 | 1.5 | 0.3 | 1.2 | — |
AIR QUALITY QUESTIONS
Olomouc · air pollution - questions and answers
What do the latest air quality data show for Olomouc?
Olomouc - latest available concentrations (November 11, 2026, 03:00 local time): PM2.5: 32.8 µg/m³, PM10: 40.4 µg/m³, O₃: 11 µg/m³, NO₂: 16.9 µg/m³, SO₂: 2.3 µg/m³, CO: 457 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Olomouc over the past week?
The highest available daily mean PM2.5 was 29.3 µg/m³ (November 9, 2026). This comparison covers 7 days with data in the seven days before November 11, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Olomouc cover?
Available monthly means cover 2017-09 - 2020-05. The tables include PM2.5, PM10, NO₂. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Olomouc an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Olomouc?
For November 10, 2026, the forecast UV index is 0.9. The UV section also shows the following available days. The forecast is for a country reference point (Czech Republic), not the city itself.
What wind speed is forecast for Olomouc?
For November 8, 2026, forecast wind speed is 11.9 km/h. The weather table includes wind, temperature and other available parameters for subsequent days. These data describe a country reference point (Czech Republic); local wind may differ.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.