What is the air quality in Kusatsu today?

The current Air Quality Index (AQI) in Kusatsu is 24 (Good). PM2.5 concentration is 5.8 µg/m³.

What is the temperature in Kusatsu right now?

The current temperature in Kusatsu is 23.8°C (feels like 23.8°C). Humidity is 80.7% and wind speed is 28.4 km/h.

Is it safe to go outside in Kusatsu?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Kusatsu, Japan

Cloudy

23.8°C · 80.7% humidity

23.8°

Feels 23.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

14 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

12 4pm

24 7pm

13 10pm

11 1am

10 4am

9 7am

39 10am

39 1pm

Station readings 35h ago

AQI 10

PM2.5 2.4 µg/m³ · 35h ago

Air Quality Index Trend

45h · 33 stn

View full history →

Kusatsu'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.

80.7%

Humidity

28.4 km/h

Wind E

1006.6 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Kusatsu?

Temperature & Precipitation

PM2.5 Trend

45h · 33 stations

PM2.55.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (14 stations within 25 km)

5.8

Median

7.26

Average

2.9

Low

14.5

High

PM2.5 µg/m³ · Model: 6.5 · Bias: +0.7

What is the 7-day forecast for Kusatsu?

09-05

29.6° 22.8°

3.56 mm

09-06

30.5° 22.9°

0.62 mm

09-07

27.1° 22.7°

3.62 mm

09-08

26.3° 21.9°

11.63 mm

09-09

26.6° 22.0°

1.0 mm

09-10

30.7° 20.9°

0.13 mm

09-11

29.2° 22.5°

1.06 mm

Both models agree Avg diff: 1.7°C

Where are air quality stations near Kusatsu?

Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)

0.7 km PM2.5: 3.4 µg/m³

Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)

1.3 km PM2.5: 14.5 µg/m³

Moriyama, Moriyama, Shiga, Japan (守山守山市)

5.5 km PM2.5: 2.4 µg/m³

Ishiyamadera, Otsu, Shiga, Japan (石山大津市)

8.6 km PM2.5: 11.0 µg/m³

Otowadai, Otsu, Shiga, Japan (逢坂大津市)

9.4 km PM2.5: 3.1 µg/m³

Honkatata, Otsu, Shiga, Japan (堅田大津市)

11.7 km PM2.5: 2.9 µg/m³

Nagitsuji Ikejiricho, Kyoto Prefecture, Japan (自排山科京都市山科区)

14.8 km PM2.5: 10.1 µg/m³

Daigokagiocho, Kyoto Prefecture, Japan (醍醐京都市伏見区)

16.5 km PM2.5: 6.0 µg/m³

Takakaichokita, Omihachiman, Shiga, Japan (国道１号八幡市)

17.9 km PM2.5: 8.2 µg/m³

Kyoto (京都)

18.1 km PM2.5: 11.0 µg/m³

What cities are near Kusatsu?

32 Rittō 31 Moriyama 13 Ōtsu 29 Yasu 30 Konan 34 Ōmihachiman 21 Kitahama 33 Kōka 34 Minakuchichō-matoba 35 Kamigyō-ku

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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 2026-09-05T10:26 UTC.