Air Quality in Koga, Japan

Drizzle
27.3°C · 72.5% humidity
27.3°
Feels 31.9°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast
54 6pm
54
54
12 9pm
24
12
19 12am
16
19
19 3am
21
21
22 6am
24
24
26 9am
23
25
25 12pm
25
25
25 3pm
25
25
AD 728×90

Air Quality Index Trend

45h · 20 stn

Koga'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.

72.5%
Humidity
52.0 km/h
Wind NE
1002.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
12
2.87 µg/m³
PM10▲
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Koga?

Temperature & Precipitation

PM2.5 Trend

45h · 20 stations
PM2.52.87 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (9 stations within 25 km)
2.87
Median
5.84
Average
2.4
Low
8.2
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +8.0

What is the 7-day forecast for Koga?

09-05
27.3° 25.0°
0.56 mm
09-06
29.2° 23.3°
0.19 mm
09-07
31.0° 23.7°
0.38 mm
09-08
28.6° 23.2°
0.31 mm
09-09
29.7° 25.1°
1.25 mm
09-10
28.9° 23.0°
2.87 mm
09-11
28.6° 23.5°
3.0 mm
Both models agree Avg diff: 1.9°C

Where are air quality stations near Koga?

10
Koga, Fukuoka Prefecture, Japan (古賀古賀市)
1.9 km PM2.5: 2.4 µg/m³
30
Kasumigaoka, Fukuoka, Japan (香椎福岡市東区)
7.3 km PM2.5: 7.2 µg/m³
10
Yoshizuka, Fukuoka, Japan (吉塚福岡市博多区)
14.5 km PM2.5: 2.4 µg/m³
34
Fukuoka (福岡)
17.0 km PM2.5: 8.2 µg/m³
30
Nishijin, Fukuoka, Japan (西新福岡市早良区)
19.3 km PM2.5: 7.2 µg/m³
25
Ohashi, Fukuoka, Japan (大橋福岡市南区)
20.4 km PM2.5: 6.0 µg/m³
25
Nagao, Fukuoka, Japan (長尾福岡市城南区)
21.1 km PM2.5: 6.0 µg/m³
30
Ishimaru, Fukuoka, Japan (石丸福岡市西区)
22.5 km PM2.5: 7.2 µg/m³
34
Tsudamachi, Nogata, Fukuoka, Japan (直方直方市)
24.4 km PM2.5: 8.2 µg/m³
30
Tsudamachi, Nogata, Fukuoka, Japan (直方直方市)
24.4 km PM2.5: 7.2 µg/m³

What cities are near Koga?

16 Nishifukuma 17 Shingū 16 Fukutsu 20 Munakata 22 Wakasugi 23 Sasaguri 13 Fukuoka 21 Sue 27 Miyawaka 20 Shime
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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 2026-09-05T12:11 UTC.