Air Quality in Niihama, Japan

Drizzle
26.4°C · 77.4% humidity
26.4°
Feels 26.4°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
27 6pm
27
27
30 9pm
28
27
26 12am
25
25
25 3am
24
24
24 6am
24
24
24 9am
24
24
24 12pm
24
24
24 3pm
25
24
AD 728×90

Air Quality Index Trend

45h · 9 stn

Niihama'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.

77.4%
Humidity
108.5 km/h
Wind ENE
1002.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
30
7.26 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

45h · 9 stations
PM2.57.26 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
7.26
Median
5.9
Average
3.6
Low
8.2
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -1.0
09-05
27.2° 25.0°
2.31 mm
09-06
27.3° 25.0°
2.56 mm
09-07
27.4° 25.1°
0.69 mm
09-08
27.6° 23.0°
14.69 mm
09-09
27.2° 24.6°
2.38 mm
09-10
27.6° 25.3°
0.69 mm
09-11
25.9° 22.9°
11.06 mm
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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 2026-09-05T12:12 UTC.