Air Quality in Niihama, Japan

Drizzle
21.6°C · 76.7% humidity
21.6°
Feels 21.6°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast
27 11am
27
27
25 2pm
27
27
27 5pm
34
54
54 8pm
54
54
54 11pm
54
54
54 2am
54
54
54 5am
66
54
54 8am
54
34
AD 728×90

Air Quality Index Trend

47h · 14 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.

76.7%
Humidity
42.9 km/h
Wind NE
1013.4 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
6.08 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Niihama?

Temperature & Precipitation

PM2.5 Trend

47h · 14 stations
PM2.56.08 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (6 stations within 25 km)
6.08
Median
8.65
Average
5.8
Low
12.0
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +1.3

What is the 7-day forecast for Niihama?

06-09
21.6° 20.7°
1.25 mm
06-10
21.8° 19.7°
1.38 mm
06-11
21.9° 20.6°
0.06 mm
06-12
22.0° 20.8°
06-13
23.6° 20.2°
4.75 mm
06-14
22.2° 21.1°
2.56 mm
06-15
24.3° 19.3°
4.5 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Niihama?

34
Kubotacho, Niihama, Ehime, Japan (金子新居浜市)
2.3 km PM2.5: 8.2 µg/m³
28
Kubotacho, Niihama, Ehime, Japan (金子新居浜市)
2.3 km PM2.5: 6.7 µg/m³
30
Kubotacho, Niihama, Ehime, Japan (金子新居浜市)
2.3 km PM2.5: 7.2 µg/m³
21
Hongo, Niihama, Ehime, Japan (中村新居浜市)
3.9 km PM2.5: 5.0 µg/m³
53
Hongo, Niihama, Ehime, Japan (中村新居浜市)
3.9 km PM2.5: 13.1 µg/m³
29
Hongo, Niihama, Ehime, Japan (中村新居浜市)
3.9 km PM2.5: 7.0 µg/m³
61
Omachi, Saijo, Ehime, Japan (西条西条市)
11.5 km PM2.5: 16.9 µg/m³
30
Nyugawa, Saijo, Ehime, Japan (東予西条市)
21.0 km PM2.5: 7.2 µg/m³
34
Nyugawa, Saijo, Ehime, Japan (東予西条市)
21.0 km PM2.5: 8.2 µg/m³
24
Mishimamiyagawa, Shikokuchuo, Ehime, Japan (伊予三島四国中央市)
22.7 km PM2.5: 5.8 µg/m³

What cities are near Niihama?

33 Saijō 42 Shikokuchūō 50 Kawanoechō 41 Imabari 23 Kan’onjichō 26 Innoshima 40 Tōon 28 Mitoyo 32 Shinagawa 34 Ikedachō
Get AQI alerts for Niihama

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T05:48 UTC.