Air Quality in Kusatsu, Japan

Heavy Rain
20.3°C · 77.8% humidity
20.3°
Feels 20.3°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
11 stations

Nearby Monitoring Stations

AQI Forecast
27 4am
27
27
21 7am
25
27
49 10am
63
64
64 1pm
65
53
53 4pm
34
34
34 7pm
34
34
27 10pm
27
27
27 1am
27
34
AD 728×90

Air Quality Index Trend

47h · 37 stn

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. Current PM2.5 concentration in Kusatsu is 1.0× the WHO annual guideline of 5 µg/m³.

77.8%
Humidity
99.9 km/h
Wind SSE
999.4 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
21
5.03 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Kusatsu?

Temperature & Precipitation

PM2.5 Trend

47h · 37 stations
PM2.55.03 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (11 stations within 25 km)
5.03
Median
7.74
Average
1.9
Low
12.0
High
PM2.5 µg/m³ · Model: 13.7 · Bias: +8.7

What is the 7-day forecast for Kusatsu?

05-28
24.3° 12.2°
12.44 mm
05-29
20.3° 17.0°
25.56 mm
05-30
23.6° 16.9°
1.31 mm
05-31
23.7° 18.2°
06-01
28.0° 17.8°
06-02
24.5° 17.9°
0.31 mm
06-03
25.9° 17.3°
1.19 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near Kusatsu?

21
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
0.7 km PM2.5: 5.0 µg/m³
34
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
0.7 km PM2.5: 8.2 µg/m³
30
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
0.7 km PM2.5: 7.2 µg/m³
23
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
1.3 km PM2.5: 5.5 µg/m³
27
Moriyama, Moriyama, Shiga, Japan (守山守山市)
5.5 km PM2.5: 6.5 µg/m³
47
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
8.6 km PM2.5: 11.3 µg/m³
17
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
8.6 km PM2.5: 4.1 µg/m³
13
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
9.4 km PM2.5: 3.1 µg/m³
9
Honkatata, Otsu, Shiga, Japan (堅田大津市)
11.7 km PM2.5: 2.2 µg/m³
21
Honkatata, Otsu, Shiga, Japan (堅田大津市)
11.7 km PM2.5: 5.0 µg/m³

What cities are near Kusatsu?

35 Rittō 50 Moriyama 28 Ōtsu 42 Yasu 29 Konan 35 Ōmihachiman 38 Kitahama 25 Kōka 24 Minakuchichō-matoba 35 Kamigyō-ku
Get AQI alerts for Kusatsu

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T22:51 UTC.