Chiba air quality · Japan
Clean overnight air is linked to deeper, less interrupted sleep
US AQI 22 (Good) in Chiba, from 23 MOE Japan monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Chiba
- PM2.5 · µg/m³4.0Under WHO limit
- NO₂ · µg/m³7.5Under WHO limit
- O₃ · µg/m³49.0
- SO₂ · µg/m³2.6Under WHO limit
- CO · mg/m³0.23
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Chiba right now?
Air quality is satisfactory and poses little or no risk.
Walking and commuting
Go aheadEnjoy it.
Running and jogging
Go aheadA great time to run outdoors.
Cycling
Go aheadRide freely.
Children playing outside
Go aheadNo limits.
Older adults and heart or lung conditions
Go aheadNo limits.
Open windows
Go aheadAir out your home.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededNot needed.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
What US AQI 0–50 means for your health →
Air quality by area in Chiba
12 stations, worst first- 市原岩崎西Good33
- 真砂公園Good28
- 佐倉山王（車）Good · roadside28
- 千城台わかば小学校Good22
- 寒川小学校Good22
Show all 12 stations
- 蘇我保育所Good22
- 千草自排Good · roadside22
- 真砂自排Good · roadside22
- 市原ちはら台Good17
- 四街道鹿渡Good17
- 市原八幡Good11
- 宮野木Good6
Roadside and industrial monitors are shown but are not part of the city figure.
Chiba air quality history
Daily average, 16 days- 33average daily US AQI over 16 days
- 63worst day, 2 November
- 13cleanest day, 7 November
- 0days at Unhealthy or worse
The last 7 days averaged 26, better than the week before (43). 13 of the last 16 days were Good.
Nearby cities
Japan rankingChiba air quality: common questions
What is the AQI in Chiba right now?
The US AQI in Chiba is 22 (Good), based on 23 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Chiba today?
A great time to be outside. Air quality is satisfactory and poses little or no risk. For runners: A great time to run outdoors.
Which area of Chiba has the worst air right now?
市原岩崎西 has the highest reading at 33 (Good). 宮野木 has the lowest at 6, out of 12 stations reporting.
How has air quality in Chiba been recently?
Over the last 16 days with data, Chiba averaged US AQI 33. The worst day was 2 November at 63; the cleanest was 7 November at 13. 0 days were at Unhealthy or worse.
Where does Chiba's air quality data come from?
From Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data, using 23 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data. Readings are published by the monitoring agency and may be revised.