Sendai: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

Latest air quality data: Sendai

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Pollution and air quality forecast for Sendai. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Sendai:

particulate matter (PM2.5) dust - 7 (Good)
particulate matter (PM10) suspended dust - 8 (Good)
ozone (O3) - 83 (Moderate)
nitrogen dioxide (NO2) - 5 (Good)
sulfur dioxide (SO2) - 4 (Good)
carbon monoxide (CO) - 198 (Good)

Real-time Air Quality Index (AQI) for Sendai, Thursday, August 27, 2026: 2.

AQI 2 Moderate

What is the air quality in Sendai today? Is the air polluted in Sendai?. Is there smog?

Today (Thursday, August 27, 2026) air quality is moderate in Sendai. Some pollutants in Sendai may slightly affect very few hypersensitive individuals. Air pollutants in Sendai may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Sendai? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 7 (Good) For comparison, the highest level of PM2.5 in Sendai in the last 7 days was: 18 (Saturday, August 22, 2026) and the lowest: 9 (Monday, August 24, 2026).

What is the level of PM10 today in Sendai? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Sendai is: 8 (Good)

How is the O3 level today in Sendai? (ozone (O3))
83 (Moderate)

How high is the level of NO2? (nitrogen dioxide (NO2))
5 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
4 (Good)

How high is the CO level? (carbon monoxide (CO))
198 (Good)

Current data Thursday, August 27, 2026 at 10:00 AM

PM2,5 7 (Good)

PM10 8 (Good)

O3 83 (Moderate)

NO2 5 (Good)

SO2 4 (Good)

CO 198 (Good)

Data on air pollution from recent days in Sendai

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	13 Moderate	11 Good	14 Moderate	9 Good	10 Good	18 Moderate	9 Good	12 Good
pm10	13 Good	12 Good	15 Good	9 Good	13 Good	20 Moderate	9 Good	14 Good
o3	59 Good	68 Good	78 Moderate	68 Good	61 Good	78 Moderate	74 Moderate	66 Good
no2	12 Good	7 Good	7 Good	9 Good	6 Good	7 Good	7 Good	10 Good
so2	5 Good	3 Good	3 Good	4 Good	4 Good	4 Good	2 Good	3 Good
co	208 Good	238 Good	222 Good	201 Good	144 Good	195 Good	236 Good	250 Good

data source »

Quality of life in Sendai

Green and Parks in the City

Sendai 100%

South Korea: 61% Taiwan: 53% Northern Mariana Islands: 83% Guam: 29%

particulate matter PM2.5

Sendai 12 (Good)

Pleasure of spending time in the city

Sendai 90%

South Korea: 43% North Korea: 44% Taiwan: 47% Northern Mariana Islands: 81% Guam: 62%

particulate matter PM10

Sendai 22 (Moderate)

Air Pollution

Sendai 13%

South Korea: 69% North Korea: 44% Taiwan: 61% Northern Mariana Islands: 11% Guam: 33%

Garbage Disposal

Sendai 100%

South Korea: 62% North Korea: 47% Taiwan: 65% Northern Mariana Islands: 42% Guam: 35%

Availability and quality of drinking water

Sendai 88%

South Korea: 72% North Korea: 47% Taiwan: 54% Northern Mariana Islands: 56% Guam: 52%

Cleanliness and tidiness

Sendai 100%

South Korea: 63% North Korea: 58% Taiwan: 56% Northern Mariana Islands: 56% Guam: 37%

Noise and Light pollution

Sendai 0%

North Korea: 33% Taiwan: 59% Northern Mariana Islands: 42% Guam: 54%

Water Pollution

Sendai 25%

South Korea: 38% North Korea: 56% Taiwan: 58% Northern Mariana Islands: 58% Guam: 46%

Source: Numbeo

Sendai

Thursday, August 27, 2026 at 10:00 AM

PM2,5 7.3 (Good)

particulate matter (PM2.5) dust

PM10 7.5 (Good)

particulate matter (PM10) suspended dust

O3 83 (Moderate)

ozone (O3)

NO2 4.8 (Good)

nitrogen dioxide (NO2)

SO2 4.4 (Good)

sulfur dioxide (SO2)

CO 198 (Good)

carbon monoxide (CO)

Sendai

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	12	8.8	18	10	8.8	14	11	13
pm10	14	9.3	20	13	9.3	15	12	13
o3	66	74	78	61	68	78	68	59
no2	9.6	6.7	7.3	5.9	8.8	6.9	7.3	12
so2	3.5	2.4	3.8	3.7	3.6	2.6	2.9	4.7
co	250	236	195	144	201	222	238	208

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — Japan

16-day weather forecast for Japan: today around 32°C (rain), lows near 21°C. Daily temperature and conditions, updated every day. Wind is light today (about 6 km/h) — pollutants can build up near the ground.

☀️ UV Index · 16-day Forecast — Japan

The UV index in Japan today is 7.1 (high) — unprotected fair skin can burn in about 30 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Sendai — compare nearby locations.

Chiba 18 µg/m³
Tokyo 30 µg/m³
Yokohama 30 µg/m³
Osaka City 8 µg/m³
Nagoya 17 µg/m³
Sapporo 6 µg/m³
Kōbe Shi 7 µg/m³
Kyoto 6 µg/m³

Frequently asked questions

Is the air safe to breathe in Sendai today?

The current average PM2.5 across Sendai is about 7 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Sendai?

Right now PM2.5 in Sendai averages about 7 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Sendai?

Over the past week, the highest daily PM2.5 in Sendai was recorded on Saturday, August 22 (about 18 µg/m³).

What is the UV index in Sendai today?

The UV index in Sendai today is 7.1 (high) — unprotected fair skin can burn in about 30 minutes.

Does today's wind help disperse smog in Sendai?

Wind is light today (about 6 km/h) — pollutants can build up near the ground.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.