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Sendai Good

Sendai, Miyagi

Updated: Mar 14, 2026, 2:00 AM

300500
Good

Air quality is satisfactory, and air pollution poses little or no risk.

Current Weather

0°C
Temperature
88%
Humidity
2.4
mph wind
Mainly clear
Conditions

Pollutant Breakdown

30
PM2.5
µg/m³ · Fine particles
10
PM10
µg/m³ · Coarse particles
16
Ozone
ppb · Ground-level ozone
14.9
NO₂
ppb · Nitrogen dioxide
1.5
SO₂
ppb · Sulfur dioxide
3.4
CO
ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Thu
3/12
18
avg
Fri
3/13
16
avg
Sat
3/14
20
avg
Sun
3/15
26
avg
Mon
3/16
43
avg
Tue
3/17
22
avg
Wed
3/18
80
avg

Health Guidance

General population: No restrictions. Enjoy outdoor activities.
Sensitive groups: Air quality is good. Normal activities are fine.
💨
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 30, which is classified as "Good". Air quality is satisfactory, and air pollution poses little or no risk.

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