What is the air quality in Saikai today?

The current Air Quality Index (AQI) in Saikai is 23 (Good). PM2.5 concentration is 5.5 µg/m³.

What is the temperature in Saikai right now?

The current temperature in Saikai is 22.3°C (feels like 22.3°C). Humidity is 89.5% and wind speed is 112.5 km/h.

Is it safe to go outside in Saikai?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Saikai, Japan

Rain

22.3°C · 89.5% humidity

22.3°

Feels 22.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 17 stn

View full history →

Saikai's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions.

89.5%

Humidity

112.5 km/h

Wind S

1014.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

5.5 µg/m³

PM10▲

54.9 µg/m³

050100150200300500

What is the weather forecast for Saikai?

Temperature & Precipitation

PM2.5 Trend

45h · 17 stations

PM2.55.5 µg/m³ ✓ WHO

Good

PM1054.9 µg/m³

Moderate

UV INDEX0.0

Low

Station readings (4 stations within 25 km)

5.5

Median

4.42

Average

2.6

Low

6.0

High

PM2.5 µg/m³ · Model: 19.2 · Bias: +13.7

What is the 7-day forecast for Saikai?

10-21

22.3° 19.7°

10.56 mm

10-22

23.5° 21.5°

10-23

22.0° 19.8°

0.31 mm

10-24

22.8° 19.1°

3.88 mm

10-25

20.4° 17.6°

1.12 mm

10-26

20.1° 15.1°

10-27

20.0° 19.1°

Both models agree Avg diff: 4.5°C

Where are air quality stations near Saikai?

Osetocho Yukinourakamigo, Saikai, Nagasaki, Japan (雪浦大気測定局西海市)

7.2 km PM2.5: 6.0 µg/m³

Osetocho Yukinourakamigo, Saikai, Nagasaki, Japan (雪浦大気測定局西海市)

7.2 km PM2.5: 3.1 µg/m³

Kinkaimura Matsumachi, Nagasaki, Nagasaki, Japan (村松長崎市)

16.4 km PM2.5: 6.0 µg/m³

Kawatana, Nagasaki Prefecture, Japan (川棚大気測定局東彼杵郡川棚町)

19.5 km PM2.5: 3.1 µg/m³

Fukuishicho, Sasebo, Nagasaki, Japan (福石佐世保市)

20.0 km PM2.5: 2.2 µg/m³

Sasebo (佐世保)

22.0 km PM2.5: 5.0 µg/m³

Sasebo (佐世保)

22.0 km PM2.5: 8.2 µg/m³

Nodago, Nagasaki, Japan (時津小学校大気測定局西彼杵郡時津町)

23.2 km PM2.5: 2.2 µg/m³

Nodago, Nagasaki, Japan (時津小学校大気測定局西彼杵郡時津町)

23.2 km PM2.5: 2.4 µg/m³

Nodago, Nagasaki, Japan (時津小学校大気測定局西彼杵郡時津町)

23.2 km PM2.5: 2.6 µg/m³

What cities are near Saikai?

26 Sasebo 11 Togitsu 17 Ōmura 20 Obita 19 Arita 28 Nagasaki 14 Ureshinomachi-shimojuku 25 Imarichō-kō 32 Isahaya 21 Takeo

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T08:29 UTC.