Air Quality in Kōzan, Japan
Heavy Rain
19.1°C · 87.0% humidity
19.1°
Feels 19.1°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Kōzan's air quality — share it
AQI Forecast
54
6am
54
54
40
9am
47
53
56
12pm
59
61
50
3pm
51
52
53
6pm
53
53
54
9pm
27
34
34
12am
34
34
34
3am
34
27
Air Quality Index Trend
47h · 14 stnKōzan'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 Kōzan is 1.9× the WHO annual guideline of 5 µg/m³.
87.0%
Humidity
58.6 km/h
Wind E
1002.1 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
9.7 µg/m³
PM10▲
54.9 µg/m³
050100150200300500
What is the weather forecast for Kōzan?
Temperature & Precipitation
PM2.5 Trend
47h · 14 stationsPM2.59.7 µg/m³
✓ WHO
Good
PM1054.9 µg/m³
Moderate
UV INDEX9.4
Very High
Station readings (2 stations within 25 km)
9.7
Median
10.15
Average
7.2
Low
13.1
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +6.7
What is the 7-day forecast for Kōzan?
05-29
19.1° 16.4°
12.69 mm
05-30
23.1° 15.9°
1.88 mm
05-31
24.0° 16.5°
06-01
26.9° 17.2°
06-02
26.0° 16.9°
06-03
23.2° 15.3°
3.19 mm
06-04
24.1° 13.3°
0.38 mm
Both models agree
Avg diff: 2.9°C
Where are air quality stations near Kōzan?
22
Fukuyama, Hiroshima Prefecture, Japan (松永小学校福山市)
53
Fukuyama, Hiroshima Prefecture, Japan (松永小学校福山市)
30
Tōkaichimachi, Miyoshi-shi, Hiroshima-ken, Japan (三次市十日市町三次市)
45
Tōkaichimachi, Miyoshi-shi, Hiroshima-ken, Japan (三次市十日市町三次市)
What cities are near Kōzan?
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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 2026-05-29T00:10 UTC.