Air Quality in Niihama, Japan
Cloudy
26.3°C · 79.8% humidity
26.3°
Feels 26.3°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Niihama's air quality — share it
AQI Forecast
27
12pm
27
27
25
3pm
34
34
34
6pm
34
34
27
9pm
34
27
27
12am
27
27
27
3am
27
27
27
6am
27
34
34
9am
34
34
Air Quality Index Trend
41h · 7 stnNiihama'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.
79.8%
Humidity
22.2 km/h
Wind S
1005.4 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.9 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Niihama?
Temperature & Precipitation
PM2.5 Trend
41h · 7 stationsPM2.55.9 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
What is the 7-day forecast for Niihama?
08-03
27.4° 24.2°
0.75 mm
08-04
28.6° 26.3°
2.38 mm
08-05
28.6° 26.1°
2.12 mm
08-06
27.5° 26.5°
0.63 mm
08-07
29.8° 26.4°
3.06 mm
08-08
28.3° 25.1°
3.56 mm
08-09
28.1° 25.2°
1.13 mm
Both models agree
Avg diff: 1.7°C
Where are air quality stations near Niihama?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T06:37 UTC.