Mont Millais/College Hill Junction

Monitoring Station · Saint Helier, JE

3

Good

Air quality is satisfactory. Enjoy outdoor activities.

Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous

AQI Forecast Calibrated

3 1am

3

2

2 4am

2

2

2 7am

2

2

2 10am

2

2

2 1pm

2

—

— 4pm

—

—

— 7pm

—

—

— 10pm

—

—

Station readings

3

3

CAMS model adj -23

25

25

25

25

25

25

25

25

25

25

25

25

25

25

Air Quality Trend (24h)

PM2.50.7 µg/m³ ✓ WHO

Good

Nearby Monitoring Stations

Bottom of Mont Millais

0.3 km PM2.5: 2.0 µg/m³

Georgetown Junction

0.5 km PM2.5: 2.0 µg/m³

Longueville Road/Georgetown Junction

0.6 km PM2.5: 2.0 µg/m³

Beresford Street (Calibration) New No 1

0.6 km PM2.5: 6.0 µg/m³

Next to Green St roundabout and tunnel

0.7 km PM2.5: 2.2 µg/m³

0.9 km PM2.5: 2.8 µg/m³

Springfield (Roberts Garage)

1.0 km PM2.5: 2.0 µg/m³

Robin Hood junction

1.0 km PM2.5: 2.4 µg/m³

Nearby Cities

10 Saint Helier 8 Saint Peter Port 6 Octeville 25 Saint-Malo 5 Équeurdreville-Hainneville 6 Cherbourg 5 Tourlaville 21 Saint-Lô 22 Saint-Brieuc

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-10T04:17 UTC.