Air Quality in Kōka, Japan

Heavy Rain
20.3°C · 77.8% humidity
20.3°
Feels 20.3°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast
27 4am
27
34
25 7am
28
49
51 10am
64
64
65 1pm
65
65
66 4pm
54
54
54 7pm
54
34
34 10pm
34
54
54 1am
54
54
AD 728×90

Air Quality Index Trend

47h · 28 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 1.2× the WHO annual guideline of 5 µg/m³.

77.8%
Humidity
99.9 km/h
Wind SSE
999.4 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
5.91 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Kōka?

Temperature & Precipitation

PM2.5 Trend

47h · 28 stations
PM2.55.91 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (6 stations within 25 km)
5.91
Median
8.07
Average
1.9
Low
12.0
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +4.9

What is the 7-day forecast for Kōka?

05-28
24.3° 12.2°
12.44 mm
05-29
20.3° 17.0°
25.56 mm
05-30
23.6° 16.9°
1.31 mm
05-31
23.7° 18.2°
06-01
28.0° 17.8°
06-02
24.5° 17.9°
0.31 mm
06-03
25.9° 17.3°
1.19 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near Kōka?

33
Minakuchicho Minakuchi, Koka, Shiga, Japan (甲賀甲賀市)
1.8 km PM2.5: 7.9 µg/m³
46
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
14.6 km PM2.5: 11.0 µg/m³
34
Kasugacho, Higashiomi, Shiga, Japan (東近江東近江市)
14.6 km PM2.5: 8.2 µg/m³
27
Moriyama, Moriyama, Shiga, Japan (守山守山市)
18.2 km PM2.5: 6.5 µg/m³
21
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 5.0 µg/m³
30
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 7.2 µg/m³
34
Kusatsu, Kusatsu, Shiga, Japan (自排草津草津市)
18.3 km PM2.5: 8.2 µg/m³
23
Kusatsucho, Kusatsu, Shiga, Japan (草津草津市)
19.1 km PM2.5: 5.5 µg/m³
47
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
22.8 km PM2.5: 11.3 µg/m³
17
Ishiyamadera, Otsu, Shiga, Japan (石山大津市)
22.8 km PM2.5: 4.1 µg/m³

What cities are near Kōka?

24 Minakuchichō-matoba 29 Konan 24 Hino 35 Rittō 31 Youkaichi 35 Ōmihachiman 21 Kusatsu 42 Yasu 50 Moriyama 33 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 2026-05-28T22:51 UTC.