Air Quality in Ōtsu, Japan

Cloudy
24.1°C · 77.5% humidity
24.1°
Feels 24.1°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 4pm
17
17
13 7pm
20
25
0 10pm
1
2
4 1am
5
5
6 4am
6
6
7 7am
7
7
17 10am
37
37
17 1pm
37
37
Station readings 35h ago
AQI 10
PM2.5 2.4 µg/m³ · 35h ago
AD 728×90

Air Quality Index Trend

45h · 39 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.

77.5%
Humidity
39.4 km/h
Wind E
1006.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
13
3.16 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Ōtsu?

Temperature & Precipitation

PM2.5 Trend

45h · 39 stations
PM2.53.16 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (19 stations within 25 km)
3.16
Median
7.18
Average
2.9
Low
14.5
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +6.6

What is the 7-day forecast for Ōtsu?

09-05
29.5° 23.5°
2.25 mm
09-06
29.1° 22.6°
1.31 mm
09-07
27.3° 22.0°
2.63 mm
09-08
27.5° 22.0°
2.56 mm
09-09
27.2° 22.7°
1.69 mm
09-10
31.0° 21.0°
0.62 mm
09-11
30.8° 23.2°
2.56 mm
Both models agree Avg diff: 1.9°C

Where are air quality stations near Ōtsu?

13
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
0.3 km PM2.5: 3.1 µg/m³
42
Nagitsuji Ikejiricho, Kyoto Prefecture, Japan (自排山科京都市山科区)
5.7 km PM2.5: 10.1 µg/m³
46
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
6.2 km PM2.5: 11.0 µg/m³
56
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
8.0 km PM2.5: 14.5 µg/m³
25
Daigokagiocho, Kyoto Prefecture, Japan (醍醐京都市伏見区)
8.1 km PM2.5: 6.0 µg/m³
14
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
8.7 km PM2.5: 3.4 µg/m³
46
Kyoto (京都)
9.1 km PM2.5: 11.0 µg/m³
17
Nishikiomiyacho, Kyoto Prefecture, Japan (自排大宮京都市中京区)
10.8 km PM2.5: 4.1 µg/m³
34
Nishikujo Nandencho, Kyoto Prefecture, Japan (自排南京都市南区)
11.3 km PM2.5: 8.2 µg/m³
10
Moriyama, Moriyama, Shiga, Japan (守山守山市)
12.9 km PM2.5: 2.4 µg/m³

What cities are near Ōtsu?

24 Kusatsu 34 Kyoto 35 Kamigyō-ku 32 Rittō 31 Moriyama 30 Uji 37 Mukō 32 Kōtari 32 Arashiyama 29 Yasu
Get AQI alerts for Ōtsu

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 2026-09-05T10:26 UTC.