Air Quality in Ōmihachiman, Japan

Cloudy
24.7°C · 75.2% humidity
24.7°
Feels 24.7°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast
27 5pm
27
27
13 8pm
17
17
19 11pm
20
21
22 2am
23
23
23 5am
24
24
24 8am
24
54
54 11am
54
54
34 2pm
34
34
AD 728×90

Air Quality Index Trend

45h · 30 stn

Ōmihachiman'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.

75.2%
Humidity
11.1 km/h
Wind ESE
1006.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
13
3.18 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Ōmihachiman?

Temperature & Precipitation

PM2.5 Trend

45h · 30 stations
PM2.53.18 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (8 stations within 25 km)
3.18
Median
6.0
Average
2.2
Low
9.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +3.1

What is the 7-day forecast for Ōmihachiman?

09-05
27.0° 23.3°
6.38 mm
09-06
27.6° 22.3°
2.0 mm
09-07
26.3° 22.7°
4.75 mm
09-08
26.8° 22.0°
4.13 mm
09-09
27.2° 23.1°
1.5 mm
09-10
29.3° 22.3°
0.38 mm
09-11
27.0° 22.7°
1.25 mm
Both models agree Avg diff: 1.8°C

Where are air quality stations near Ōmihachiman?

34
Takakaichokita, Omihachiman, Shiga, Japan (国道１号八幡市)
0.9 km PM2.5: 8.2 µg/m³
20
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
10.0 km PM2.5: 4.8 µg/m³
21
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
10.0 km PM2.5: 5.0 µg/m³
10
Moriyama, Moriyama, Shiga, Japan (守山守山市)
12.5 km PM2.5: 2.4 µg/m³
12
Honkatata, Otsu, Shiga, Japan (堅田大津市)
16.3 km PM2.5: 2.9 µg/m³
14
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
17.9 km PM2.5: 3.4 µg/m³
56
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
18.2 km PM2.5: 14.5 µg/m³
13
Otowadai, Otsu, Shiga, Japan (逢坂大津市)
25.4 km PM2.5: 3.1 µg/m³
46
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
25.8 km PM2.5: 11.0 µg/m³

What cities are near Ōmihachiman?

28 Yasu 18 Youkaichi 21 Echigawa 30 Moriyama 26 Rittō 24 Konan 32 Kitahama 16 Kusatsu 20 Kōka 20 Minakuchichō-matoba
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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 2026-09-05T11:15 UTC.