Fine particles
6.8µg/m³Fair · 1 hourCAMS model • Open-Meteo
ChibaAir 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.
Chiba - latest available concentrations (November 11, 2026, 11:00 local time): PM2.5: 6.8 µg/m³, PM10: 7.4 µg/m³, O₃: 62 µg/m³, NO₂: 21.4 µg/m³, SO₂: 14.3 µg/m³, CO: 153 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Chiba · Air pollutant concentrations
Data time: November 11, 2026 · 11:00 · local timeParticulate matter
7.4µg/m³Good · 1 hourOzone
62µg/m³Fair · 1 hourNitrogen dioxide
21.4µg/m³Fair · 1 hourSulphur dioxide
14.3µg/m³Good · 1 hourCarbon monoxide
153µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Chiba
Chiba - air pollution over recent days (2026-08-31 - 2026-11-10)
Concentrations of all available pollutants for this city.
PM2.5Lowest 5.34 2026-09-07Highest 35.07 2026-09-042026-08-31 - 2026-11-10
PM10Lowest 5.8 2026-09-07Highest 35.99 2026-09-042026-08-31 - 2026-11-10
O₃Lowest 26.46 2026-11-06Highest 66.5 2026-09-062026-08-31 - 2026-11-10
NO₂Lowest 11.96 2026-09-06Highest 59.13 2026-09-042026-08-31 - 2026-11-10
SO₂Lowest 5.42 2026-09-06Highest 31.65 2026-09-042026-08-31 - 2026-11-10
COLowest 136.46 2026-08-31Highest 441.5 2026-11-062026-08-31 - 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 | 9.78 | 12.03 | 8.79 | 7.08 | 24.35 | 12.99 | 15.84 | 5.34 | 5.7 | 7.4 | 35.07 | 25.06 | 15.49 | 11.68 | 9.41 |
| PM10 | 10.49 | 13.52 | 9.21 | 7.52 | 24.62 | 13.35 | 18.88 | 5.8 | 7.2 | 8.94 | 35.99 | 27.85 | 19.79 | 14.76 | 11.72 |
| O₃ | 44.33 | 38.42 | 50.83 | 51.96 | 26.46 | 39.63 | 36.25 | 36.75 | 66.5 | 63.5 | 36.17 | 28.71 | 40 | 42.75 | 55.88 |
| NO₂ | 24.52 | 25.98 | 24.32 | 21.51 | 56.71 | 32.57 | 28.9 | 19.01 | 11.96 | 19.21 | 59.13 | 44.4 | 30.84 | 26.68 | 20.13 |
| SO₂ | 10.76 | 11.96 | 11.98 | 11.45 | 30.17 | 15.57 | 13.87 | 10.33 | 5.42 | 8.42 | 31.65 | 26.65 | 13.73 | 11.86 | 9.29 |
| CO | 154.79 | 158.08 | 152.21 | 213.17 | 441.5 | 246.75 | 159.79 | 206.42 | 146.17 | 139.29 | 231.38 | 332.58 | 265.92 | 229.96 | 136.46 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
Environment and quality of life ratings · Chiba
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Chiba | South Korea | North Korea | Taiwan | Northern Mariana Islands | Guam |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 63% | 61% | 50% | 53% | 83% | 29% |
| particulate matter PM2.5 (µg/m³) | 16.7 | — | — | — | — | — |
| Pleasure of spending time in the city | 66% | 43% | 44% | 47% | 81% | 62% |
| particulate matter PM10 (µg/m³) | 35.3 | — | — | — | — | — |
| Air Pollution | 37% | 69% | 44% | 61% | 11% | 33% |
| Garbage Disposal | 68% | 62% | 47% | 65% | 42% | 35% |
| Availability and quality of drinking water | 71% | 72% | 47% | 54% | 56% | 52% |
| Cleanliness and tidiness | 72% | 63% | 58% | 56% | 56% | 37% |
| Noise and Light pollution | 45% | 50% | 33% | 59% | 42% | 54% |
| Water Pollution | 37% | 38% | 56% | 58% | 58% | 46% |
Air quality in nearby cities
All cities →Japan↗
Tokyo
PM2.519.8
PM1020.6
µg/m³
PM2.5 · ModerateNO₂ 35.6O₃ 49
November 11, 202611:00
Japan↗
Edogawa-ku
PM2.56.8
PM107.4
µg/m³
PM2.5 · FairNO₂ 21.4O₃ 62
November 11, 202611:00
Japan↗
Ōta-ku
PM2.519.8
PM1020.6
µg/m³
PM2.5 · ModerateNO₂ 35.6O₃ 49
November 11, 202611:00
Japan↗
Yokohama
PM2.519.8
PM1020.6
µg/m³
PM2.5 · ModerateNO₂ 35.6O₃ 49
November 11, 202611:00
Japan↗
Saitama-shi
PM2.516.9
PM1017.9
µg/m³
PM2.5 · ModerateNO₂ 18.3O₃ 63
November 11, 202611:00
Japan↗
Sagamihara-shi
PM2.59.7
PM1010.2
µg/m³
PM2.5 · FairNO₂ 18.3O₃ 62
November 11, 202611:00
Japan↗
Shizuoka-shi
PM2.55.8
PM106.2
µg/m³
PM2.5 · FairNO₂ 15.8O₃ 59
November 11, 202611:00
Japan↗
Nagoya
PM2.55.4
PM105.9
µg/m³
PM2.5 · FairNO₂ 9.3O₃ 69
November 11, 202611:00
Japan · air quality in other cities
WEATHER & SURROUNDINGS
Japan · weather forecast
Daily maximum and minimum temperatures. Forecast point: 36.2048, 138.2529. Forecast for a country reference point; conditions in the city may differ.
Scroll the forecast to see the following days.
Japan · November 9, 2026: minimum temperature 5.6°C, maximum 10.7°C. Wind: 9.3 km/h. Humidity: 73%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-11-09 | 7.3 | 5.6 | 10.7 | 8.1 | 0.6 | 2.6 | 73 | 100 |
| 2026-11-10 | 4.7 | 3 | 6 | 3.3 | 6.3 | 2.7 | 82 | 100 |
| 2026-11-11 | 7.8 | 0.7 | 9.5 | 3.1 | 0.2 | 2.3 | 47 | 3 |
| 2026-11-12 | 13.4 | 2.2 | 14.7 | 6.8 | 0.3 | 2.2 | 37 | 72 |
| 2026-11-13 | 15.2 | 5.4 | 16.2 | 7.7 | — | 2.5 | 32 | 3 |
| 2026-11-14 | 15.1 | 6.4 | 15.1 | 7.9 | 2 | 1.6 | 39 | 97 |
| 2026-11-15 | 10.2 | 7.8 | 12.2 | 10.1 | 10.4 | 2.1 | 97 | 100 |
| 2026-11-16 | 11.4 | 6.3 | 11.5 | 6.3 | 1.2 | 2.5 | 69 | 76 |
| 2026-11-17 | 7.8 | 5.8 | 8.2 | 8.2 | 14.1 | 2.4 | 94 | 100 |
| 2026-11-18 | 11.4 | 1.8 | 12.2 | 1.8 | 7.7 | 6.9 | 79 | 100 |
| 2026-11-19 | 7.5 | 0.4 | 7.5 | 0.4 | 0.2 | 5.7 | 65 | 71 |
| 2026-11-20 | 10.4 | -1.1 | 10.4 | 3.7 | 2.7 | 2.7 | 44 | 37 |
| 2026-11-21 | 8.3 | 2.6 | 9.1 | 2.6 | 0.8 | 4.2 | 69 | 78 |
| 2026-11-22 | 9.8 | 2.5 | 9.8 | 4.5 | 0.4 | 5.7 | 61 | 31 |
| 2026-11-23 | 11.6 | 1.5 | 11.6 | 5 | 6.4 | 2.6 | 38 | 100 |
| 2026-11-24 | 8.3 | 5.9 | 8.3 | 5.9 | 0.5 | 3.2 | 85 | 100 |
| 2026-11-25 | 10.7 | 3.7 | 11.4 | 3.7 | — | 1.5 | 47 | 3 |
UV index by day · Japan
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.
Japan · November 10, 2026: UV index: 1.8 .
| 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 | 1.8 | 4.2 | 4.1 | 4.1 | 3.8 | 1 | 3.2 | 0.7 | 1.9 | 3.3 | 3.2 | 3.3 | 3.3 | 3.2 | 1.4 | — |
AIR QUALITY QUESTIONS
Chiba · air pollution - questions and answers
What do the latest air quality data show for Chiba?
Chiba - latest available concentrations (November 11, 2026, 11:00 local time): PM2.5: 6.8 µg/m³, PM10: 7.4 µg/m³, O₃: 62 µg/m³, NO₂: 21.4 µg/m³, SO₂: 14.3 µg/m³, CO: 153 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Chiba over the past week?
The highest available daily mean PM2.5 was 24.4 µg/m³ (November 6, 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.
Is the PM2.5 concentration for Chiba 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 Chiba?
For November 10, 2026, the forecast UV index is 1.8. The UV section also shows the following available days. The forecast is for a country reference point (Japan), not the city itself.
What wind speed is forecast for Chiba?
For November 9, 2026, forecast wind speed is 9.3 km/h. The weather table includes wind, temperature and other available parameters for subsequent days. These data describe a country reference point (Japan); 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.