Fine particles
4.7µg/m³Good · 1 hourCAMS model • Open-Meteo
BolognaAir 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.
Bologna - latest available concentrations (September 27, 2026, 03:00 local time): PM2.5: 4.7 µg/m³, PM10: 7 µg/m³, O₃: 55 µg/m³, NO₂: 4.2 µg/m³, SO₂: 0.2 µg/m³, CO: 166 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →
2 weather warnings in effect for Italy
Bologna · Air pollutant concentrations
Data time: September 27, 2026 · 03:00 · local timeParticulate matter
7µg/m³Good · 1 hourOzone
55µg/m³Good · 1 hourNitrogen dioxide
4.2µg/m³Good · 1 hourSulphur dioxide
0.2µg/m³Good · 1 hourCarbon monoxide
166µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Bologna
Bologna - air pollution over recent days (2026-08-31 - 2026-09-26)
Concentrations of all available pollutants for this city.
PM2.5Lowest 4.26 2026-09-26Highest 9.35 2026-09-032026-08-31 - 2026-09-26
PM10Lowest 7.43 2026-09-26Highest 14.57 2026-09-012026-08-31 - 2026-09-26
O₃Lowest 65.92 2026-09-24Highest 97.63 2026-09-042026-08-31 - 2026-09-26
NO₂Lowest 3.62 2026-09-26Highest 8.97 2026-09-242026-08-31 - 2026-09-26
SO₂Lowest 0.39 2026-08-31Highest 0.75 2026-09-072026-08-31 - 2026-09-26
COLowest 140.63 2026-09-07Highest 188.83 2026-09-242026-08-31 - 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 | 4.26 | 4.8 | 6.93 | 4.33 | 5.89 | 7.38 | 6.23 | 7.97 | 8.22 | 7.9 | 9 | 9.35 | 8.3 | 7.96 | 6.1 |
| PM10 | 7.43 | 8.58 | 12.22 | 7.94 | 10.49 | 11.04 | 9.23 | 12.28 | 13.07 | 11.94 | 13.59 | 13.45 | 13.07 | 14.57 | 11.54 |
| O₃ | 71.42 | 71.25 | 65.92 | 69.42 | 71.33 | 83.08 | 80.88 | 77.46 | 77.63 | 92.96 | 97.63 | 86.17 | 83.83 | 86.17 | 81.71 |
| NO₂ | 3.62 | 4.98 | 8.97 | 4.03 | 4.53 | 6.35 | 6.16 | 4.15 | 4.85 | 4.21 | 5.35 | 6.46 | 6.44 | 4.63 | 4.47 |
| SO₂ | 0.43 | 0.54 | 0.59 | 0.41 | 0.57 | 0.64 | 0.47 | 0.75 | 0.63 | 0.52 | 0.56 | 0.65 | 0.66 | 0.53 | 0.39 |
| CO | 170.5 | 175.38 | 188.83 | 179.29 | 173.96 | 165.29 | 158.88 | 140.63 | 141.04 | 149.38 | 160 | 163.33 | 160.21 | 152.67 | 150.88 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Bologna
Bologna - air pollution history (2017-11 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 5 2020-05Highest 11.44 2020-042017-11 - 2020-05
PM10Lowest 9.62 2019-05Highest 39.5 2020-012017-11 - 2020-05
O₃Lowest 17.23 2017-11Highest 84.08 2019-072017-11 - 2020-05
NO₂Lowest 9.5 2020-05Highest 36.95 2020-012017-11 - 2020-05
COLowest 1 2020-01Highest 890 2020-022017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 5 | 11.44 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PM10 | 9.91 | 17.36 | 25.84 | 32.97 | 39.5 | 30.14 | 15.48 | 25.76 | 16.76 | 19.57 | 18.26 | 22.31 | 9.62 | 17.61 | 22.34 | 34.64 | 33.76 | 29.77 | 24.03 | 25.61 | 19.24 | 17.93 | 16.37 | 12.75 | 18.2 | 20.16 | 21.62 | 19.5 | 31.36 | 30.41 | 28.57 |
| O₃ | 60.4 | 64.2 | 46.6 | 33.85 | 19.98 | 21.61 | 24.83 | 33.9 | 53.92 | 73.72 | 84.08 | 80.83 | 60.65 | 63.43 | 53.08 | 31.53 | 20.41 | 17.55 | 17.92 | 34.93 | 57.35 | 76.78 | 76.25 | 58.03 | 46.65 | 56.27 | 43 | 27.98 | 20.51 | 19.15 | 17.23 |
| NO₂ | 9.5 | 12.26 | 18.77 | 28.82 | 36.95 | 31.5 | 25.71 | 20.21 | 17.93 | 13.35 | 14.45 | 14.86 | 17.89 | 20.76 | 25.5 | 30.13 | 32.38 | 31.4 | 24.32 | 22.29 | 18.12 | 14.18 | 15.08 | 15.21 | 19.25 | 21.39 | 31.82 | 32.74 | 31.13 | 32.99 | 27.4 |
| CO | 258 | 710 | 687 | 890 | 1 | 727 | 500 | 430.5 | 347.5 | 383.5 | 502 | 453 | 417.5 | 485 | 507.5 | 841 | 857 | 327 | 544 | 404 | 391 | 336 | 372 | 250 | 444.5 | 689.5 | 727.5 | 700 | 849.5 | 786.5 | 257 |
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 7
AIR QUALITY ARCHIVE · CASTELLUCCIO
CASTELLUCCIO
Station code: CASTELLUCCIO
Monthly monitoring station data.
PM2.5Lowest 3.33 2020-05Highest 9.4 2020-042017-11 - 2020-05
PM10Lowest 5.08 2019-11Highest 16.5 2019-062017-11 - 2020-05
O₃Lowest 34.2 2017-11Highest 73.9 2019-042017-11 - 2020-05
NO₂Lowest 0.16 2020-05Highest 9.79 2019-092017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 3.33 | 9.4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PM10 | 6.17 | 13.8 | 15.8 | 8.68 | 5.8 | 6.48 | 5.08 | 11.5 | 11.7 | 15.5 | 12.7 | 16.5 | 5.11 | 10.7 | 10 | 9.75 | 6.93 | 5.56 | 9.34 | 11.5 | 11.5 | 12.3 | 11.2 | 9.06 | 11.8 | 12.8 | 9.67 | 5.83 | 7.94 | 5.24 | 9.26 |
| O₃ | 57.8 | 62.4 | 52.8 | 57.5 | 50.8 | 49.6 | 46.7 | 39.7 | 45.3 | 63.6 | 71.2 | 71.5 | 61.1 | 73.9 | 70.4 | 56.4 | 45.7 | 47.6 | 34.3 | 41.5 | 48 | 66.2 | 59.1 | 45.5 | 40.1 | 69.9 | 66.6 | 47.2 | 54.2 | 54.4 | 34.2 |
| NO₂ | 0.16 | 1.27 | 2.88 | 2.03 | 2.2 | 2.93 | 5.75 | 8.76 | 9.79 | 6.85 | 6.42 | 5.67 | 6.51 | 5.85 | 4.25 | 3.28 | 3.48 | 4.72 | 5.8 | 5.43 | 4.35 | 3.62 | 3.21 | 3.69 | 3.33 | 1.83 | 1.72 | 4.13 | 1.27 | 1.63 | 2.79 |
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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · DE AMICIS
DE AMICIS
Station code: DE AMICIS
Monthly monitoring station data.
PM10Lowest 9.26 2019-05Highest 44.5 2020-012017-11 - 2020-05
NO₂Lowest 12.6 2020-05Highest 42.5 2019-012017-11 - 2020-05
COLowest 129 2018-06Highest 851 2019-022017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 10.5 | 19.1 | 28.8 | 34.6 | 44.5 | 32.7 | 17.8 | 29.5 | 17.1 | 19.3 | 18.5 | 19.9 | 9.26 | 18.8 | 22.3 | 34.1 | 36.4 | 35.5 | 28.4 | 26.5 | 20 | 18.6 | 14.8 | 10.5 | 15.9 | 21 | 22 | 21 | 35.2 | 31.8 | 33.5 |
| NO₂ | 12.6 | 15.3 | 24.9 | 33.6 | 34.8 | 29.1 | 26 | 20.9 | 16.6 | 13.2 | 13.3 | 14 | 21.3 | 26 | 30.3 | 41 | 42.5 | 42 | 32 | 28.4 | 20 | 15.4 | 16.1 | 12.8 | 14.9 | 17.9 | 33.8 | 36.5 | 37.4 | 41.9 | 32.9 |
| CO | — | — | — | — | — | 626 | 391 | 397 | 295 | 241 | 293 | 253 | 197 | 329 | 378 | 851 | 807 | 653 | 321 | 189 | 314 | 298 | 355 | 129 | 235 | 541 | 638 | 629 | 780 | 713 | 513 |
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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · GIARDINI MARGHERITA
GIARDINI MARGHERITA
Station code: GIARDINI MARGHERITA
Monthly monitoring station data.
PM2.5Lowest 3.67 2020-05Highest 9.86 2020-042017-11 - 2020-05
PM10Lowest 9.03 2019-05Highest 42.1 2020-012017-11 - 2020-05
O₃Lowest 7.84 2018-12Highest 96.4 2019-072017-11 - 2020-05
NO₂Lowest 6.31 2020-05Highest 43.1 2018-022017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 3.67 | 9.86 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PM10 | 9.17 | 14.7 | 24.7 | 33.1 | 42.1 | 30.7 | 16 | 28.1 | 16.1 | 17.8 | 16.6 | 23.2 | 9.03 | 16.6 | 22.1 | 36.4 | 36.8 | 25.7 | 26.6 | 26.2 | 18.2 | 17.4 | 15.7 | 11.9 | 17.7 | 19.4 | 22.3 | 19.9 | 34.1 | 32.9 | 29.7 |
| O₃ | 65.9 | 64.2 | 41.4 | 24.6 | 9.18 | 10.9 | 14.6 | 31.8 | 59.6 | 85.5 | 96.4 | 92.9 | 58 | 56 | 48 | 21 | 10.9 | 7.84 | 9.27 | 31.7 | 67.2 | 89.7 | 88.9 | 74.9 | 56.2 | 55.6 | 32.9 | 14.4 | 9.94 | 9.48 | 10.8 |
| NO₂ | 6.31 | 9.83 | 18.1 | 29.7 | 39.6 | 34.1 | 27.9 | 19.2 | 14.4 | 9.95 | 10.9 | 11.3 | 15.1 | 16.4 | 20.9 | 32 | 35.6 | 32.5 | 25.7 | 20.5 | 13.7 | 9.79 | 10.6 | 9.39 | 16.3 | 18 | 34 | 43.1 | 38 | 38.7 | 32.8 |
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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · PORTA SAN FELICE
PORTA SAN FELICE
Station code: PORTA SAN FELICE
Monthly monitoring station data.
PM2.5Lowest 6.83 2020-05Highest 12.6 2020-042017-11 - 2020-05
PM10Lowest 10.3 2020-05Highest 51.9 2020-012017-11 - 2020-05
NO₂Lowest 23 2020-05Highest 68.3 2018-022017-11 - 2020-05
COLowest 1 2017-11Highest 919 2018-012017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 6.83 | 12.6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PM10 | 10.3 | 18.1 | 28.9 | 42.6 | 51.9 | 35.8 | 19.9 | 28.5 | 18.2 | 20 | 19.4 | 24.1 | 12.8 | 20.9 | 25.2 | 40.8 | 41.9 | 36.5 | 28.5 | 29.9 | 20 | 19.9 | 19.8 | 15.3 | 21.6 | 24.4 | 28.4 | 26.4 | 39.9 | 37.7 | 34.2 |
| NO₂ | 23 | 28.4 | 36 | 48.5 | 54.6 | 52.5 | 49.5 | 42 | 42.7 | 32 | 35.9 | 36.1 | 44.5 | 50.8 | 64.9 | 50.5 | 51.4 | 48.6 | 43.8 | 47.9 | 46.9 | 38.4 | 43.6 | 46.1 | 50.1 | 53.6 | 62.3 | 68.3 | 54 | 62.4 | 56.7 |
| CO | 258 | 710 | 687 | 890 | 1 | 828 | 609 | 464 | 400 | 526 | 711 | 653 | 638 | 641 | 637 | 831 | 907 | 1 | 767 | 619 | 468 | 374 | 389 | 371 | 654 | 838 | 817 | 771 | 919 | 860 | 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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · VIA CHIARINI
VIA CHIARINI
Station code: VIA CHIARINI
Monthly monitoring station data.
PM10Lowest 9.5 2020-05Highest 39.1 2019-022017-11 - 2020-05
O₃Lowest 4.61 2017-12Highest 85.8 2019-072017-11 - 2020-05
NO₂Lowest 6.96 2020-05Highest 49.2 2020-012017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 9.5 | 16.5 | 25 | 34.6 | 34.5 | 35.1 | 16 | 26.9 | 18.4 | 23 | 21.2 | 25.1 | 11.6 | 19 | 24.6 | 39.1 | 38.2 | 33.6 | 25.8 | 28.3 | 20.8 | 19.4 | 18.8 | 14.6 | 21.9 | 22.7 | 22 | 22.7 | 35.7 | 33.2 | 31.6 |
| O₃ | 55.6 | 65.6 | 42.2 | 23.5 | 8.34 | 9.63 | 9.22 | 26.9 | 55 | 76.4 | 85.8 | 81.6 | 54.7 | 54.4 | 41.6 | 18.9 | 8.45 | 6.22 | 5.01 | 21.6 | 49.9 | 73.7 | 75.6 | 57.2 | 41.3 | 47.2 | 27.4 | 14.4 | 6.61 | 4.61 | 8.12 |
| NO₂ | 6.96 | 10.2 | 21.4 | 40.3 | 49.2 | 37.5 | 25.1 | 18.7 | 13.4 | 10 | 10.8 | 11.5 | 14.1 | 17.3 | 22.9 | 31.9 | 35.7 | 32.2 | 24.3 | 20.4 | 16 | 11.5 | 11.8 | 11.1 | 19.8 | 30.2 | 45.8 | 32.5 | 34.5 | 29.4 | 24.3 |
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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · SAN LAZZARO
SAN LAZZARO
Station code: SAN LAZZARO
Monthly monitoring station data.
PM10Lowest 9.9 2019-05Highest 47.2 2020-012017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 11.5 | 18.6 | 26.9 | 39.5 | 47.2 | 34.7 | 18.9 | 30.2 | 18.4 | 21.7 | 19.8 | 23.6 | 9.9 | 17.7 | 25.8 | 39.6 | 37 | 34.7 | 27.9 | 29.8 | 21.6 | 19.3 | 17.8 | 13 | 19.4 | 21.2 | 22.2 | 21.9 | 34.3 | 34.8 | 30.9 |
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 ↗Arpae Emilia-Romagna
AIR QUALITY ARCHIVE · SAN PIETRO CAPOFIUME
SAN PIETRO CAPOFIUME
Station code: SAN PIETRO CAPOFIUME
Monthly monitoring station data.
PM2.5Lowest 6.17 2020-05Highest 13.9 2020-042017-11 - 2020-05
PM10Lowest 9.61 2019-05Highest 50.5 2020-012017-11 - 2020-05
O₃Lowest 8.11 2017-12Highest 82.9 2019-072017-11 - 2020-05
NO₂Lowest 5.14 2018-07Highest 41.3 2020-012017-11 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 6.17 | 13.9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PM10 | 12.2 | 20.7 | 30.8 | 37.7 | 50.5 | 35.5 | 14.7 | 25.6 | 17.4 | 19.7 | 19.6 | 23.8 | 9.61 | 19.6 | 26.4 | 42.7 | 39.1 | 36.8 | 21.7 | 27.1 | 22.6 | 18.6 | 16.5 | 14.9 | 19.1 | 19.6 | 24.8 | 18.8 | 32.4 | 37.2 | 30.8 |
| O₃ | 62.3 | 64.6 | 50 | 29.8 | 11.6 | 16.3 | 28.8 | 37.2 | 55.8 | 69.4 | 82.9 | 77.3 | 68.8 | 69.4 | 52.3 | 29.8 | 16.6 | 8.54 | 23.1 | 44.9 | 64.3 | 77.5 | 81.4 | 54.5 | 49 | 52.4 | 45.1 | 35.9 | 11.3 | 8.11 | 15.8 |
| NO₂ | 7.98 | 8.53 | 9.35 | 18.8 | 41.3 | 32.9 | 20 | 11.7 | 10.7 | 8.08 | 9.37 | 10.6 | 5.81 | 8.22 | 9.78 | 22.1 | 25.6 | 28.4 | 14.3 | 11.1 | 7.77 | 6.38 | 5.14 | 8.16 | 11.1 | 6.79 | 13.3 | 11.9 | 21.6 | 23.9 | 14.9 |
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 ↗Arpae Emilia-Romagna
Environment and quality of life ratings · Bologna
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Bologna | San Marino | Croatia | Bosnia and Herzegovina | Slovenia | Albania |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 59% | 75% | 73% | 54% | 87% | 37% |
| particulate matter PM2.5 (µg/m³) | 17 | — | — | — | — | — |
| Pleasure of spending time in the city | 54% | 100% | 81% | 53% | 88% | 40% |
| particulate matter PM10 (µg/m³) | 24 | — | — | — | — | — |
| Air Pollution | 67% | 6.8% | 29% | 62% | 26% | 69% |
| Garbage Disposal | 64% | 50% | 58% | 49% | 87% | 33% |
| Availability and quality of drinking water | 70% | 100% | 86% | 71% | 96% | 33% |
| Cleanliness and tidiness | 43% | 75% | 68% | 50% | 87% | 36% |
| Noise and Light pollution | 57% | 75% | 34% | 38% | 37% | 53% |
| Water Pollution | 29% | 0% | 25% | 45% | 17% | 68% |
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Italy · air quality in other cities
WEATHER & SURROUNDINGS
Bologna · weather forecast
Daily maximum and minimum temperatures. Forecast point: 44.4938, 11.3387.
Scroll the forecast to see the following days.
Bologna · September 24, 2026: minimum temperature 14.7°C, maximum 26.6°C. Wind: 9 km/h. Humidity: 41%.
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 | 25.7 | 14.7 | 26.6 | 18.8 | 1.7 | 2.5 | 41 | 94 |
| 2026-09-25 | 23.4 | 16.4 | 23.7 | 16.4 | 0.5 | 3.7 | 39 | 63 |
| 2026-09-26 | 24.5 | 13.8 | 26.1 | 17.9 | 0.3 | 2.3 | 44 | 3 |
| 2026-09-27 | 26.3 | 16.1 | 28 | 17.6 | 4.6 | 2.2 | 45 | 3 |
| 2026-09-28 | 25.7 | 12.9 | 27 | 18.4 | 0.2 | 2.5 | 41 | 67 |
| 2026-09-29 | 26.7 | 14 | 26.7 | 18.9 | 1.7 | 2.7 | 41 | 8 |
| 2026-09-30 | 26.5 | 15.1 | 26.8 | 18.4 | 0.2 | 2.7 | 46 | 10 |
| 2026-10-01 | 26.6 | 14.5 | 27.3 | 19.1 | 3.8 | 1.7 | 37 | 5 |
| 2026-10-02 | 26.2 | 16.4 | 27.2 | 16.7 | 6.4 | 2.9 | 32 | 97 |
| 2026-10-03 | 25.5 | 14.3 | 25.7 | 18 | 0.5 | 2.4 | 21 | 90 |
| 2026-10-04 | 27 | 16.4 | 27.2 | 18 | 0.3 | 3 | 18 | 20 |
| 2026-10-05 | 26.9 | 15.7 | 27.1 | 17.5 | 0.3 | 3 | 22 | 38 |
| 2026-10-06 | 26.2 | 15.6 | 26.8 | 17.8 | 0.8 | 2.5 | 35 | 7 |
| 2026-10-07 | 27.2 | 15.8 | 27.5 | 18.5 | 3.9 | 2.3 | 30 | 39 |
| 2026-10-08 | 27.5 | 16.6 | 28.1 | 18 | 1.5 | 3.1 | 29 | 10 |
| 2026-10-09 | 26.9 | 15.2 | 27.1 | 17.4 | 5.7 | 3.8 | 32 | 100 |
| 2026-10-10 | 27.2 | 15.3 | 27.5 | 17.3 | 7.6 | 2.7 | 25 | 100 |
| 2026-10-11 | 25.7 | 15 | 25.7 | 25.7 | — | 3.1 | 35 | 5 |
UV index by day · Bologna
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.
Bologna · September 26, 2026: UV index: 5 .
| 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 | 5 | 4.9 | 4.9 | 4.8 | 4.8 | 4.1 | 4.4 | 4.3 | 4.3 | 0.9 | 3 | 2.8 | 2.8 | 2.9 | 3.1 | — |
Airborne pollen · Italy
grains/m³ Data for a country reference point. Local conditions may differ.
Italy · September 26, 2026: Alder: 0 grains/m³. Birch: 0 grains/m³. Grass: 0.2 grains/m³. Mugwort: 5.1 grains/m³. Olive: 0 grains/m³. Ragweed: 0.1 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 | 0.2 | 0.1 | 0.1 | 0.1 |
| Mugwort | 5.1 | 5.6 | 4.5 | 2.6 |
| Olive | 0 | 0 | 0 | 0 |
| Ragweed | 0.1 | 0.1 | 0 | 0 |
Sea temperature and waves · Italy
Data for a selected coastal point.
Scroll the forecast to see the following days.
Italy · September 26, 2026: Sea temperature (°C): 25.5 . Wave height (m): 0.2 .
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25.5 | 25.4 | 25.4 | 25.4 | 25.4 | 25.4 | 25.3 | 25.2 | 25.1 | — | — | — | — | — | — | — |
| Wave height (m) | 0.2 | 0.1 | 0 | 0 | 0.1 | 0.1 | 0.1 | 0.1 | 0 | — | — | — | — | — | — | — |
Sea temperature throughout the year · Italy
Monthly climate values for a selected coastal area (°C).
14.8°Jan
14.1°Feb
15.1°Mar
16.9°Apr
20.2°May
24.5°Jun
27.1°Jul
27.1°Aug
25.2°Sep
22.2°Oct
19.2°Nov
16°Dec
| °C | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea | 14.8 | 14.1 | 15.1 | 16.9 | 20.2 | 24.5 | 27.1 | 27.1 | 25.2 | 22.2 | 19.2 | 16 |
AIR QUALITY QUESTIONS
Bologna · air pollution - questions and answers
What do the latest air quality data show for Bologna?
Bologna - latest available concentrations (September 27, 2026, 03:00 local time): PM2.5: 4.7 µg/m³, PM10: 7 µg/m³, O₃: 55 µg/m³, NO₂: 4.2 µg/m³, SO₂: 0.2 µg/m³, CO: 166 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Bologna over the past week?
The highest available daily mean PM2.5 was 7.4 µg/m³ (September 21, 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 Bologna cover?
Available monthly means cover 2017-11 - 2020-05. The tables include PM2.5, PM10, O₃, NO₂, 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 Bologna 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 Bologna?
For September 26, 2026, the forecast UV index is 5. The UV section also shows the following available days.
What wind speed is forecast for Bologna?
For September 24, 2026, forecast wind speed is 9 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.