Air Quality in Ōtsu, Japan

Drizzle
24.1°C · 55.3% humidity
24.1°
Feels 24.1°
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
26 stations

Nearby Monitoring Stations

AQI Forecast
34 11am
27
27
42 2pm
38
35
33 5pm
31
37
36 8pm
55
35
35 11pm
55
54
54 2am
54
54
54 5am
54
54
27 8am
25
34
AD 728×90

Air Quality Index Trend

46h · 47 stn

Ōtsu'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.

55.3%
Humidity
66.7 km/h
Wind ESE
1012.5 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
42
10.09 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Ōtsu?

Temperature & Precipitation

PM2.5 Trend

46h · 47 stations
PM2.510.09 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
AD 300×250
Station readings (26 stations within 25 km)
10.09
Median
9.75
Average
6.0
Low
18.8
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -3.6

What is the 7-day forecast for Ōtsu?

05-30
24.1° 17.3°
1.13 mm
05-31
25.3° 19.2°
0.06 mm
06-01
28.9° 18.7°
06-02
25.8° 18.5°
0.06 mm
06-03
26.2° 17.3°
1.25 mm
06-04
27.2° 14.2°
0.31 mm
06-05
28.4° 18.1°
7.69 mm
Both models agree Avg diff: 2.8°C

Where are air quality stations near Ōtsu?

17
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
0.3 km PM2.5: 4.1 µg/m³
65
Misasagishichonocho, Kyoto Prefecture, Japan (山科京都市山科区)
5.1 km PM2.5: 18.8 µg/m³
8
Nagitsuji Ikejiricho, Kyoto Prefecture, Japan (自排山科京都市山科区)
5.7 km PM2.5: 1.9 µg/m³
30
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
6.2 km PM2.5: 7.2 µg/m³
30
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
6.2 km PM2.5: 7.2 µg/m³
65
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
8.0 km PM2.5: 18.8 µg/m³
57
Daigokagiocho, Kyoto Prefecture, Japan (醍醐京都市伏見区)
8.1 km PM2.5: 15.0 µg/m³
50
Daigokagiocho, Kyoto Prefecture, Japan (醍醐京都市伏見区)
8.1 km PM2.5: 12.0 µg/m³
46
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
8.7 km PM2.5: 11.0 µg/m³
30
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
8.7 km PM2.5: 7.2 µg/m³

What cities are near Ōtsu?

28 Kusatsu 46 Kyoto 45 Kamigyō-ku 34 Rittō 34 Moriyama 42 Uji 29 Mukō 42 Kōtari 42 Arashiyama 34 Yasu
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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 2026-05-30T05:04 UTC.