Air Quality in Ōtsu, Japan

Cloudy
24.6°C · 79.7% humidity
24.6°
Feels 24.6°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
26 6am
26
27
29 9am
27
27
27 12pm
27
29
29 3pm
29
29
29 6pm
29
29
36 9pm
56
56
56 12am
56
56
56 3am
56
56
Station readings 46h ago
AQI 27
PM2.5 6.5 µg/m³ · 46h ago
AD 728×90

Air Quality Index Trend

46h · 60 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.

79.7%
Humidity
31.6 km/h
Wind E
1008.1 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
6.91 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Ōtsu?

Temperature & Precipitation

PM2.5 Trend

46h · 60 stations
PM2.56.91 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (3 stations within 25 km)
6.91
Median
7.1
Average
6.0
Low
9.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -1.0

What is the 7-day forecast for Ōtsu?

08-03
34.9° 23.3°
0.88 mm
08-04
35.8° 25.9°
2.31 mm
08-05
30.0° 24.0°
1.5 mm
08-06
29.7° 23.9°
8.06 mm
08-07
33.4° 25.8°
3.0 mm
08-08
32.9° 24.9°
2.88 mm
08-09
30.9° 24.7°
0.5 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Ōtsu?

38
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
0.3 km PM2.5: 9.1 µg/m³
34
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
0.3 km PM2.5: 8.2 µg/m³
30
Nagitsuji Ikejiricho, Kyoto Prefecture, Japan (自排山科京都市山科区)
5.7 km PM2.5: 7.2 µg/m³
38
Nagitsuji Ikejiricho, Kyoto Prefecture, Japan (自排山科京都市山科区)
5.7 km PM2.5: 9.1 µg/m³
37
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
8.0 km PM2.5: 8.9 µg/m³
34
Daigokagiocho, Kyoto Prefecture, Japan (醍醐京都市伏見区)
8.1 km PM2.5: 8.2 µg/m³
25
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
8.7 km PM2.5: 6.0 µg/m³
91
Kyoto (京都)
9.1 km PM2.5: 31.1 µg/m³
21
Kyoto (京都)
9.1 km PM2.5: 5.0 µg/m³
34
Nishikiomiyacho, Kyoto Prefecture, Japan (自排大宮京都市中京区)
10.8 km PM2.5: 8.2 µg/m³

What cities are near Ōtsu?

25 Kusatsu 28 Kyoto 28 Kamigyō-ku 25 Rittō 25 Moriyama 30 Uji 26 Mukō 30 Kōtari 27 Arashiyama 25 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 2026-08-08T00:55 UTC.