Air Quality in Kōka, Japan

Overcast
24.5°C · 96.0% humidity
24.5°
Feels 24.5°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
5 stations

Nearby Monitoring Stations

AQI Forecast
66 5am
66
54
68 8am
64
61
59 11am
58
57
56 2pm
55
55
55 5pm
54
54
54 8pm
54
54
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

47h · 6 stn

Kōka'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 Kōka is 1.3× the WHO 24-hour guideline of 15 µg/m³.

96.0%
Humidity
33.5 km/h
Wind ESE
999.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
68
20.02 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Kōka?

Temperature & Precipitation

PM2.5 Trend

47h · 6 stations
PM2.520.02 µg/m³ ×1.3 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (5 stations within 25 km)
20.02
Median
15.62
Average
8.4
Low
22.1
High
PM2.5 µg/m³ · Model: 16.35 · Bias: -3.7
Both models agree Avg diff: 2.3°C

Where are air quality stations near Kōka?

73
Minakuchicho Minakuchi, Koka, Shiga, Japan (甲賀甲賀市)
1.8 km PM2.5: 22.6 µg/m³
32
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
14.6 km PM2.5: 7.7 µg/m³
63
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
14.6 km PM2.5: 17.8 µg/m³
46
Moriyama, Moriyama, Shiga, Japan (守山守山市)
18.2 km PM2.5: 11.0 µg/m³
68
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 20.2 µg/m³
63
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 17.8 µg/m³
61
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 16.9 µg/m³
65
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
19.1 km PM2.5: 18.8 µg/m³
25
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
22.8 km PM2.5: 6.0 µg/m³
40
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
22.8 km PM2.5: 9.6 µg/m³

What cities are near Kōka?

68 Minakuchichō-matoba 63 Konan 68 Hino 60 Rittō 64 Youkaichi 63 Ōmihachiman 42 Kusatsu 64 Yasu 67 Moriyama 67 Echigawa
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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 2026-07-21T23:16 UTC.