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Sendai Moderate

Sendai, Miyagi

Updated: Sep 7, 2026, 1:00 AM

590500
Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Current Weather

20.5°C
Temperature
92%
Humidity
3.4
mph wind
Moderate rain
Conditions

Pollutant Breakdown

59
PM2.5
µg/m³ · Fine particles
25
PM10
µg/m³ · Coarse particles
40
Ozone
ppb · Ground-level ozone
4.7
NO₂
ppb · Nitrogen dioxide
1.5
SO₂
ppb · Sulfur dioxide
2.3
CO
ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Sat
9/5
41
avg
Sun
9/6
35
avg
Mon
9/7
32
avg
Tue
9/8
18
avg
Wed
9/9
44
avg
Thu
9/10
56
avg
Fri
9/11
39
avg

Health Guidance

⚠️
Unusually sensitive people: Consider reducing prolonged outdoor exertion.
General population: No restrictions for most people.
💨
Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム), Miyagi Prefecture EPA (保健環境センター - 宮城県公式ウェブサイト), Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム), World Air Quality Index Project

Is the air safe in Sendai today?

The current Air Quality Index (AQI) in Sendai is 59, which is classified as "Moderate". Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Sendai, Miyagi is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50
Good
51–100
Moderate
101–150
Unhealthy for Sensitive Groups
151–200
Unhealthy
201–300
Very Unhealthy
301+
Hazardous