Fine particles
11.2µg/m³Fair · 1 hourCAMS model • Open-Meteo
PragueAir 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.
Prague - latest available concentrations (September 27, 2026, 03:00 local time): PM2.5: 11.2 µg/m³, PM10: 13.4 µg/m³, O₃: 35 µg/m³, NO₂: 9.4 µg/m³, SO₂: 1.1 µg/m³, CO: 259 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Prague · Air pollutant concentrations
Data time: September 27, 2026 · 03:00 · local timeParticulate matter
13.4µg/m³Good · 1 hourOzone
35µg/m³Good · 1 hourNitrogen dioxide
9.4µg/m³Good · 1 hourSulphur dioxide
1.1µg/m³Good · 1 hourCarbon monoxide
259µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Prague
Prague - air pollution over recent days (2026-08-31 - 2026-09-26)
Concentrations of all available pollutants for this city.
PM2.5Lowest 3.07 2026-09-05Highest 11.53 2026-09-262026-08-31 - 2026-09-26
PM10Lowest 4.6 2026-09-05Highest 16.17 2026-09-252026-08-31 - 2026-09-26
O₃Lowest 49.79 2026-09-23Highest 67.71 2026-09-052026-08-31 - 2026-09-26
NO₂Lowest 3.74 2026-09-05Highest 12.82 2026-09-232026-08-31 - 2026-09-26
SO₂Lowest 0.7 2026-08-31Highest 2.92 2026-09-232026-08-31 - 2026-09-26
COLowest 131.58 2026-09-04Highest 253.13 2026-09-262026-08-31 - 2026-09-26
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-26 | 2026-09-25 | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 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 | 11.53 | 9.26 | 7.66 | 9.06 | 5.56 | 5.07 | 5.98 | 7.35 | 5.4 | 3.07 | 4.3 | 6.41 | 6.64 | 4.38 | 5.03 |
| PM10 | 15.33 | 16.17 | 10.29 | 11.98 | 9.26 | 9.03 | 8.83 | 12.21 | 10.31 | 4.6 | 6.59 | 10.05 | 10.08 | 6.8 | 7.22 |
| O₃ | 54.46 | 53.67 | 55.83 | 49.79 | 55.21 | 61.54 | 63.42 | 60.67 | 66 | 67.71 | 62.5 | 65.13 | 60.21 | 62.79 | 57.08 |
| NO₂ | 9.07 | 11.66 | 8.81 | 12.82 | 8.25 | 5.72 | 4.44 | 9.12 | 4.95 | 3.74 | 4.1 | 7.09 | 9.19 | 5.76 | 6.35 |
| SO₂ | 1.76 | 2.13 | 1.68 | 2.92 | 1.65 | 1.16 | 1.03 | 1.47 | 1.43 | 0.83 | 0.74 | 1.14 | 1.4 | 0.8 | 0.7 |
| CO | 253.13 | 239.92 | 225.54 | 237.83 | 205.83 | 197.46 | 185.88 | 194.25 | 169.5 | 142.46 | 131.58 | 169.33 | 187.38 | 170.21 | 156.79 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Prague
Prague - air pollution history (2017-09 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 6.56 2020-02Highest 30.73 2018-022017-09 - 2020-05
PM10Lowest 11.69 2020-02Highest 40.23 2018-112017-09 - 2020-05
O₃Lowest 15.93 2018-11Highest 86.55 2018-072017-09 - 2020-05
NO₂Lowest 18.9 2020-05Highest 41.5 2019-022017-09 - 2020-05
SO₂Lowest 1.39 2018-12Highest 15.32 2018-052017-09 - 2020-05
COLowest 263 2017-10Highest 508 2020-012017-09 - 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 | 9.52 | 17.65 | 14.85 | 6.56 | 20.35 | 14.5 | 14.35 | 12.65 | 8.06 | 10.63 | 11.05 | 11.15 | 9.82 | 15.77 | 11.7 | 24.57 | 16.63 | 13.47 | 29.53 | 23.93 | 14.3 | 14.23 | 14.37 | 13.51 | 16.17 | 18.93 | 30 | 30.73 | 19.13 | 14.63 | 16.83 | 12.71 | 17.53 |
| PM10 | 13.93 | 26.4 | 22.78 | 11.69 | 28.69 | 23.06 | 23.35 | 23.91 | 18.05 | 19.02 | 21.47 | 21.18 | 16.95 | 28.69 | 19.26 | 39.28 | 22.08 | 18.74 | 40.23 | 37.14 | 24.53 | 23.57 | 22.86 | 21.92 | 27.37 | 29.57 | 37.61 | 39.51 | 24.51 | 19.07 | 24.58 | 21.88 | 26.76 |
| O₃ | 67.08 | 68.2 | 55.32 | 55.2 | 26.13 | 29.07 | 19.6 | 24.5 | 42.27 | 57.42 | 70.5 | 83.95 | 61.55 | 68.6 | 56.25 | 32.45 | 38.48 | 32.3 | 15.93 | 38.72 | 51.08 | 74.72 | 86.55 | 71.2 | 80.08 | 64.92 | 48.38 | 36.05 | 33.45 | 29.57 | 24.02 | 32.38 | 34.4 |
| NO₂ | 18.9 | 28.08 | 27.53 | 21.95 | 32.33 | 29.5 | 29.68 | 28.67 | 27.38 | 26.62 | 24.9 | 26.58 | 28.82 | 34.17 | 26.6 | 41.5 | 30.36 | 31.37 | 37.31 | 39.7 | 38.96 | 34.09 | 32.07 | 28.49 | 30.93 | 34.86 | 37.91 | 37.74 | 30.07 | 31.67 | 32.39 | 30.11 | 35.84 |
| SO₂ | 3.42 | 3.36 | 5.85 | 7.24 | 4.64 | 2.19 | 3.11 | 3.35 | 4.92 | 5.17 | 4.64 | 2.81 | 2.25 | 2.27 | 1.9 | 2.74 | 1.86 | 1.39 | 1.74 | 3.42 | 2.27 | 2.3 | 2.47 | 2.92 | 15.32 | 2.78 | 4.46 | 5.51 | 7.02 | 6.96 | 6.62 | 6.84 | 8.05 |
| CO | 456.5 | 484 | 466 | 362.5 | 508 | 489.5 | 377 | 347 | 280.5 | 324.5 | 318.5 | 419 | 378 | 373 | 308 | 445.5 | 355 | 335 | 494.5 | 407.5 | 392.5 | 310 | 310 | 318 | 427 | 382 | 474.5 | 495 | 345 | 349.5 | 383 | 263 | 328 |
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 9
AIR QUALITY ARCHIVE · Praha 8-Karlin
Praha 8-Karlin
Station code: CZ0AKAL
Monthly monitoring station data.
PM10Lowest 13.9 2020-02Highest 42.8 2019-022017-09 - 2020-05
NO₂Lowest 14.8 2020-05Highest 40.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 15.3 | 32.9 | 24 | 13.9 | 29.3 | 24.5 | 25.1 | 25.1 | 20.7 | 23.2 | 28.7 | 28.8 | 19.9 | 33.7 | 20.9 | 42.8 | 22.6 | 19.8 | 40.3 | 38.3 | 26.9 | 29.2 | 28.2 | 25.9 | 35.8 | 35.3 | 41.2 | 42.3 | 26.3 | 16.1 | 19.6 | 24.2 | 30.1 |
| NO₂ | 14.8 | 26.5 | 27 | 25.4 | 33.8 | 30.8 | 31.2 | 30.1 | 29 | 26.5 | 22.7 | 23.6 | 27.3 | 29.6 | 28.7 | 40.4 | 30 | 32.4 | 33.9 | 36.2 | 38.5 | 28.6 | 22.9 | 21 | 23.5 | 33 | 36.2 | 33.4 | 30.2 | 32.9 | 31.2 | 32 | 32.6 |
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
AIR QUALITY ARCHIVE · Praha 2-Legerova
Praha 2-Legerova
Station code: CZ0ALEG
Monthly monitoring station data.
PM10Lowest 12.2 2020-02Highest 42.1 2018-022017-09 - 2020-05
NO₂Lowest 30.8 2020-02Highest 62 2018-022017-09 - 2020-05
COLowest 242 2017-10Highest 562 2018-032017-09 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 15.2 | 27.8 | 25.1 | 12.2 | 31.7 | 26.7 | 29.3 | 28.9 | 20.4 | 21.6 | 27.7 | 21.5 | 17.3 | 30.6 | 18.2 | 40.2 | 24 | 18.3 | 42.1 | 37.9 | 22.6 | 23.5 | 21.2 | 20.1 | 26.1 | 27.1 | 38 | 42.1 | 23.2 | 18.5 | 24.6 | 20 | 30.3 |
| NO₂ | 32.8 | 42.9 | 41.6 | 30.8 | 44.4 | 42.4 | 45.7 | 42.9 | 42.1 | 46.7 | 46.3 | 58.1 | 48 | 60.9 | 38.1 | 54.5 | 41.7 | 40.7 | 56.3 | 57.5 | 57.2 | 58.4 | 54.8 | 49 | 61.6 | 60 | 61.7 | 62 | 43.6 | 41.4 | 43.3 | 39.1 | 59.7 |
| CO | 496 | 561 | 547 | 362 | 535 | 508 | 480 | 375 | 257 | 310 | 341 | 475 | 433 | 440 | 353 | 499 | 379 | 373 | 562 | 449 | 430 | 383 | 344 | 380 | 559 | 451 | 562 | 492 | 371 | 354 | 439 | 242 | 390 |
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
AIR QUALITY ARCHIVE · CZ0ALIB
CZ0ALIB
Station code: CZ0ALIB
Monthly monitoring station data.
PM2.5Lowest 6.49 2020-02Highest 32.1 2018-022017-09 - 2020-05
PM10Lowest 7.69 2020-02Highest 33.3 2018-022017-09 - 2020-05
O₃Lowest 18.1 2018-11Highest 91.2 2018-072017-09 - 2020-05
NO₂Lowest 10.4 2020-02Highest 27.9 2018-112017-09 - 2020-05
SO₂Lowest 1.35 2018-12Highest 11.3 2020-022017-09 - 2020-05
COLowest 237 2018-08Highest 498 2018-022017-09 - 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 | 9.96 | 17.5 | 14.5 | 6.49 | 20.4 | 14.2 | 13.8 | 11.5 | 7.84 | 9.87 | 10.7 | 10.9 | 9.45 | 17.2 | 11.5 | 24 | 16.8 | 12.4 | 29.8 | 21.4 | 13.7 | 13.7 | 14.3 | 13.9 | 17.2 | 16.9 | 29.7 | 32.1 | 17.6 | 13.6 | 15.4 | 11.3 | 15.9 |
| PM10 | 11.3 | 21.1 | 18.2 | 7.69 | 24.2 | 17.2 | 16.8 | 16.7 | 12.8 | 13.8 | 15.6 | 16 | 13 | 22.2 | 15.9 | 28.5 | 18.7 | 14.3 | 32.5 | 27.8 | 16.8 | 17.4 | 18.5 | 17.7 | 20.9 | 21.3 | 30.1 | 33.3 | 19 | 15.7 | 19 | 15.8 | 21.2 |
| O₃ | 69.6 | 74.8 | 60.3 | 60.8 | 31.8 | 35.3 | 25.3 | 31.7 | 48.2 | 63.2 | 71.6 | 90.7 | 67 | 72.1 | 60.8 | 38.1 | 42.2 | 36.7 | 18.1 | 43.1 | 61.6 | 79.7 | 91.2 | 75.3 | 83 | 70.7 | 55 | 41.1 | 40.7 | 34.6 | 29.2 | 37.1 | 37.1 |
| NO₂ | 11.7 | 15.5 | 15.8 | 10.4 | 20.5 | 17.2 | 16.8 | 16.2 | 14.4 | 12.1 | 12.1 | 11.2 | 13.8 | 17.7 | 12.8 | 27.5 | 19.9 | 17.9 | 27.9 | 25.6 | 19.1 | 17.2 | 14.5 | 13.8 | 15 | 16.1 | 20.6 | 24.6 | 14.5 | 17.1 | 17.7 | 15.8 | 20 |
| SO₂ | — | 3.31 | 8.2 | 11.3 | 6 | 2.48 | 4.59 | 5.41 | 5.95 | 4.14 | 4.77 | 2.09 | 1.97 | 2.2 | 2.13 | 3.52 | 1.65 | 1.35 | 1.64 | 2.27 | 3.08 | 3.15 | 3.1 | 2.07 | 2.04 | 1.85 | 3.92 | 3.52 | 2.94 | 3.13 | 4.41 | 5.67 | 7.8 |
| CO | 417 | 407 | 385 | 363 | 481 | 471 | 274 | 319 | 304 | 339 | 296 | 363 | 323 | 306 | 263 | 392 | 331 | 297 | 427 | 366 | 355 | 237 | 276 | 256 | 295 | 313 | 387 | 498 | 319 | 345 | 327 | 284 | 266 |
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
AIR QUALITY ARCHIVE · Praha 1-n. Republiky
Praha 1-n. Republiky
Station code: CZ0AREP
Monthly monitoring station data.
PM10Lowest 12.1 2020-02Highest 42 2018-022017-09 - 2020-05
NO₂Lowest 18.5 2020-05Highest 42.1 2018-072017-09 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 14.1 | 26.3 | 24 | 12.1 | 29.4 | 25 | 27.5 | 32.3 | 20.8 | 22 | 22.5 | 23.4 | 19.9 | 30.5 | 20.3 | 37.8 | 17.3 | 19.6 | 40.4 | 37 | 25.1 | 24 | 23.7 | 22.3 | 28.9 | 32.3 | 40.8 | 42 | 25.1 | 20 | 27.9 | 22 | 13.1 |
| NO₂ | 18.5 | 27.5 | 28.2 | 23.7 | 31.2 | 29.3 | 28.7 | 27.2 | 25.8 | 24.2 | 22.6 | 20.2 | 28.1 | 33.2 | 27.2 | 39.2 | 29.2 | 31.6 | 34.4 | 39.1 | 35 | 32.9 | 42.1 | 39.7 | 28.6 | 33.7 | 39.6 | 40.4 | 30.2 | 31.3 | 30.8 | 27.6 | 33.9 |
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
AIR QUALITY ARCHIVE · Praha 2-Riegrovy sady
Praha 2-Riegrovy sady
Station code: CZ0ARIE
Monthly monitoring station data.
PM2.5Lowest 6.63 2020-02Highest 29.5 2018-112017-09 - 2020-05
PM10Lowest 9.67 2020-02Highest 37 2018-112017-09 - 2020-05
O₃Lowest 15 2018-11Highest 87.4 2018-072017-09 - 2020-05
NO₂Lowest 12.9 2020-05Highest 38 2019-022017-09 - 2020-05
SO₂Lowest 1.28 2019-10Highest 28.6 2018-052017-09 - 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 | 9.08 | 17.8 | 15.2 | 6.63 | 20.3 | 14.8 | 14.9 | 13.8 | 8.29 | 11.4 | 11.4 | 11.4 | 10.2 | 17.7 | 10.8 | 23.3 | 16.4 | 13 | 29.5 | 24.6 | 10.1 | 10.4 | 11.3 | 9.82 | 12.4 | 17.2 | 27.4 | 28.7 | 17.5 | 12.3 | 13.9 | 9.22 | 13.6 |
| PM10 | 13 | 24.5 | 20.7 | 9.67 | 26.5 | 20.4 | 20 | 17.9 | 16 | 17 | 19.1 | 19 | 15.3 | 26.1 | 16 | 33.2 | 20.3 | 15.9 | 37 | 34.7 | 21.8 | 20.7 | 20.9 | 20.1 | 25.3 | 27.1 | 35 | 34.6 | 21.7 | 16.7 | 20 | 17 | 22.5 |
| O₃ | 68.1 | 68.5 | 53.8 | 53 | 25.2 | 27.7 | 17.6 | 24.1 | 42.4 | 56.9 | 72.2 | 85.7 | 62.3 | 68.6 | 56.9 | 31.6 | 37.6 | 31.3 | 15 | 37.5 | 52.2 | 77 | 87.4 | 72.5 | 83.4 | 67.6 | 50.1 | 36 | 33.6 | 28.9 | 22.7 | 30.7 | 34.8 |
| NO₂ | 12.9 | 21 | 20.8 | 16.2 | 28.5 | 25.3 | 24.7 | 24.1 | 20 | 18.8 | 16.4 | 16.9 | 21.3 | 23.6 | 21.6 | 38 | 26.5 | 25.8 | 33 | 34.6 | 28.6 | 21.9 | 18.9 | 16.1 | 14.4 | 21.9 | 25.9 | 28.7 | 21.5 | 24.8 | 26.4 | 23.2 | 27.3 |
| SO₂ | 3.42 | 3.41 | 3.51 | 3.18 | 3.29 | 1.9 | 1.63 | 1.28 | 3.89 | 6.2 | 4.51 | 3.54 | 2.53 | 2.34 | 1.68 | 1.96 | 2.08 | 1.42 | 1.84 | 4.58 | 1.45 | 1.45 | 1.84 | 3.77 | 28.6 | 3.71 | 5.01 | 7.5 | 11.1 | 10.8 | 8.82 | 8.01 | 8.31 |
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
AIR QUALITY ARCHIVE · Praha 5-Smichov
Praha 5-Smichov
Station code: CZ0ASMI
Monthly monitoring station data.
PM2.5Lowest 12.4 2019-04Highest 32.9 2018-032017-09 - 2019-04
PM10Lowest 21.4 2019-03Highest 42.6 2018-102017-09 - 2019-04
NO₂Lowest 28.8 2019-03Highest 49.3 2018-092017-09 - 2019-04
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 12.4 | 12.8 | 26.4 | 16.7 | 15 | 29.3 | 25.8 | 19.1 | 18.6 | 17.5 | 16.8 | 18.9 | 22.7 | 32.9 | 31.4 | 22.3 | 18 | 21.2 | 17.6 | 23.1 |
| PM10 | 32.8 | 21.4 | 41.9 | 23.6 | 22.8 | 42.1 | 42.6 | 30.7 | 27 | 26.6 | 25.5 | 30.1 | 34.8 | 41.5 | 40.3 | 32.3 | 26.2 | 32.9 | 28.2 | 34.8 |
| NO₂ | 40.1 | 28.8 | 44.9 | 33.2 | 39.5 | 39.4 | 45.2 | 49.3 | 43.5 | 39 | 29.6 | 42.4 | 44.3 | 41.9 | 35.2 | 40 | 41.5 | 42.5 | 38.2 | 39.5 |
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
AIR QUALITY ARCHIVE · CZ0ASUC
CZ0ASUC
Station code: CZ0ASUC
Monthly monitoring station data.
PM10Lowest 8.85 2020-02Highest 36.4 2018-112017-09 - 2020-05
O₃Lowest 18.9 2018-11Highest 94.2 2018-072017-09 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 12.8 | 22.1 | 20.1 | 8.85 | 26 | 19.5 | 19.9 | 20.1 | 14.2 | 15.7 | 17.1 | 17.4 | 14.3 | 23.1 | 15.3 | 30.1 | 20 | 16.5 | 36.4 | 30.9 | 19.8 | 18.9 | 18.7 | 18.1 | 21.3 | 23.1 | 31.2 | 35.6 | 21.6 | 15.3 | 20.9 | 18.5 | 25.3 |
| O₃ | 73.9 | 77.1 | 61.8 | 61.2 | 27.8 | 31.3 | 21.1 | 24 | 47 | 64.3 | 78.7 | 90.3 | 70.3 | 77.7 | 61.4 | 36.7 | 43.6 | 36.3 | 18.9 | 43.8 | 56.1 | 81 | 94.2 | 77.7 | 88.4 | 71.6 | 52.6 | 39.5 | 35.1 | 33.3 | 27.9 | 37.8 | 40.7 |
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
AIR QUALITY ARCHIVE · Praha 10-Vrsovice
Praha 10-Vrsovice
Station code: CZ0AVRS
Monthly monitoring station data.
PM10Lowest 14.4 2020-05Highest 55.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 14.4 | 26.9 | 25.3 | 14.6 | 31.7 | 26.4 | 25.4 | 25.8 | 19.8 | 19.3 | 20 | 21.3 | 17.3 | 31.4 | 25.1 | 55.7 | 28.6 | 23.4 | 51.4 | 46.8 | 29.7 | 26.5 | 25.1 | 25 | 31.2 | 34.4 | 44.3 | 47.5 | 26.9 | 23.2 | 28.5 | 25.6 | 32.1 |
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
AIR QUALITY ARCHIVE · Praha 9-Vysocany
Praha 9-Vysocany
Station code: CZ0AVYN
Monthly monitoring station data.
PM10Lowest 14.5 2020-02Highest 43.3 2019-022017-09 - 2020-05
O₃Lowest 11.7 2018-11Highest 73.4 2018-072017-09 - 2020-05
NO₂Lowest 22.7 2020-05Highest 46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 15.3 | 29.6 | 24.8 | 14.5 | 30.7 | 24.8 | 22.8 | 24.5 | 19.7 | 19.6 | 21.1 | 22 | 18.6 | 27.8 | 20.2 | 43.3 | 23.6 | 18.1 | 39.9 | 38.3 | 27.4 | 24.9 | 22.8 | 22.6 | 26.7 | 30.7 | 36.4 | 37.9 | 24.5 | 19.9 | 27.8 | 25.6 | 31.4 |
| O₃ | 56.7 | 52.4 | 45.4 | 45.8 | 19.7 | 22 | 14.4 | 18.2 | 31.5 | 45.3 | 59.5 | 69.1 | 46.6 | 56 | 45.9 | 23.4 | 30.5 | 24.9 | 11.7 | 30.5 | 34.4 | 61.2 | 73.4 | 59.3 | 65.5 | 49.8 | 35.8 | 27.6 | 24.4 | 21.5 | 16.3 | 23.9 | 25 |
| NO₂ | 22.7 | 35.1 | 31.8 | 25.2 | 35.6 | 32 | 31 | 31.5 | 33 | 31.4 | 29.3 | 29.5 | 34.4 | 34.1 | 29 | 46 | 32 | 31.7 | 36.3 | 39.7 | 45 | 36.1 | 32.3 | 30.2 | 31 | 35 | 39.5 | 39.9 | 30.5 | 32.7 | 34.8 | 34.9 | 37.9 |
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 · Prague
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Prague | Austria | Slovakia | Poland | Germany | Slovenia |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 80% | 78% | 58% | 62% | 78% | 87% |
| particulate matter PM2.5 (µg/m³) | 17 | — | — | — | — | — |
| Pleasure of spending time in the city | 80% | 84% | 73% | 48% | 80% | 88% |
| particulate matter PM10 (µg/m³) | 23 | — | — | — | — | — |
| Air Pollution | 35% | 21% | 35% | 63% | 25% | 26% |
| Garbage Disposal | 76% | 84% | 65% | 60% | 74% | 87% |
| Availability and quality of drinking water | 88% | 91% | 87% | 65% | 82% | 96% |
| Cleanliness and tidiness | 68% | 82% | 57% | 58% | 65% | 87% |
| Noise and Light pollution | 45% | 34% | 41% | 51% | 42% | 37% |
| Water Pollution | 27% | 14% | 27% | 39% | 23% | 17% |
Air quality in nearby cities
All cities →Czech Republic↗
Plzeň
PM2.514.2
PM1017.4
µg/m³
PM2.5 · FairNO₂ 8.9O₃ 42
September 27, 202603:00
Czech Republic↗
Brno
PM2.511.4
PM1015.2
µg/m³
PM2.5 · FairNO₂ 8.7O₃ 41
September 27, 202603:00
Czech Republic↗
Olomouc
PM2.515.7
PM1022.2
µg/m³
PM2.5 · ModerateNO₂ 11.6O₃ 38
September 27, 202603:00
Czech Republic↗
Ostrava
PM2.512.7
PM1017.4
µg/m³
PM2.5 · FairNO₂ 10.2O₃ 33
September 27, 202603:00
Czech Republic · air quality in other cities
WEATHER & SURROUNDINGS
Prague · weather forecast
Daily maximum and minimum temperatures. Forecast point: 50.0755, 14.4378.
Scroll the forecast to see the following days.
Prague · September 24, 2026: minimum temperature 9.1°C, maximum 16.1°C. Wind: 20.3 km/h. Humidity: 69%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-24 | 15.2 | 9.1 | 16.1 | 11.2 | 5.2 | 5.6 | 69 | 11 |
| 2026-09-25 | 14.2 | 9 | 15.3 | 9 | 0.1 | 2.7 | 55 | 100 |
| 2026-09-26 | 19.4 | 7.8 | 22.7 | 13.1 | 0.2 | 2.5 | 53 | 36 |
| 2026-09-27 | 18.7 | 8.5 | 21.5 | 13.3 | 0.2 | 2.9 | 64 | 64 |
| 2026-09-28 | 18.1 | 9 | 22.3 | 15.1 | 0.1 | 2.8 | 64 | 91 |
| 2026-09-29 | 18.3 | 11.1 | 22.4 | 13.6 | 10.3 | 3.4 | 59 | 26 |
| 2026-09-30 | 17 | 10.4 | 21.6 | 14.6 | 8.6 | 3.8 | 58 | 99 |
| 2026-10-01 | 17.8 | 11.1 | 22.6 | 16.3 | 1.4 | 2 | 58 | 40 |
| 2026-10-02 | 16.8 | 14.3 | 20.3 | 14.3 | 2.2 | 3.6 | 86 | 100 |
| 2026-10-03 | 17.2 | 12.5 | 19.4 | 14.9 | 1.2 | 3.5 | 57 | 94 |
| 2026-10-04 | 13 | 9.1 | 15.1 | 9.1 | — | 5.1 | 59 | 99 |
| 2026-10-05 | 16.9 | 7.8 | 20.1 | 14.3 | 0.5 | 2.1 | 50 | 17 |
| 2026-10-06 | 17.4 | 11.9 | 20.7 | 14.3 | 4.7 | 2 | 53 | 38 |
| 2026-10-07 | 17.7 | 11.6 | 21.1 | 14.7 | — | 4.2 | 48 | 20 |
| 2026-10-08 | 17.1 | 12 | 20.8 | 14.2 | 0.2 | 1.9 | 62 | 97 |
| 2026-10-09 | 17.6 | 11.6 | 21.6 | 14.5 | — | 1.6 | 54 | 99 |
| 2026-10-10 | 17.8 | 11.7 | 22.2 | 14.4 | — | 2.6 | 56 | 8 |
| 2026-10-11 | 18.9 | 12.3 | 18.9 | 15.6 | 0.1 | 6.4 | 50 | 14 |
UV index by day · Prague
City data.
Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Prague · September 26, 2026: UV index: 4.3 .
| Indicator | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 | 2026-10-11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 4.3 | 4.2 | 4.2 | 4.2 | 4.1 | 3.7 | 2.2 | 3 | 2.6 | 3.3 | 2.1 | 3.5 | 0.9 | 3.3 | 1.9 | — |
Airborne pollen · Czech Republic
grains/m³ Data for a country reference point. Local conditions may differ.
Czech Republic · September 26, 2026: Alder: 0 grains/m³. Birch: 0 grains/m³. Grass: 0.7 grains/m³. Mugwort: 1.9 grains/m³. Olive: 0 grains/m³. Ragweed: 0 grains/m³.
| Indicator | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 |
|---|---|---|---|---|
| Alder | 0 | 0 | 0 | 0 |
| Birch | 0 | 0 | 0 | 0 |
| Grass | 0.7 | 0.4 | 0.5 | 0.3 |
| Mugwort | 1.9 | 1.7 | 1.2 | 1.1 |
| Olive | 0 | 0 | 0 | 0 |
| Ragweed | 0 | 0 | 0 | 0 |
AIR QUALITY QUESTIONS
Prague · air pollution - questions and answers
What do the latest air quality data show for Prague?
Prague - latest available concentrations (September 27, 2026, 03:00 local time): PM2.5: 11.2 µg/m³, PM10: 13.4 µg/m³, O₃: 35 µg/m³, NO₂: 9.4 µg/m³, SO₂: 1.1 µg/m³, CO: 259 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Prague over the past week?
The highest available daily mean PM2.5 was 11.5 µg/m³ (September 26, 2026). This comparison covers 7 days with data in the seven days before September 27, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Prague cover?
Available monthly means cover 2017-09 - 2020-05. The tables include PM2.5, PM10, O₃, NO₂, SO₂, CO. 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 Prague 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 Prague?
For September 26, 2026, the forecast UV index is 4.3. The UV section also shows the following available days.
What wind speed is forecast for Prague?
For September 24, 2026, forecast wind speed is 20.3 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
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.