Air Quality in St Helens, United Kingdom

Windy
18.7°C · 44.9% humidity
18.7°
Feels 18.7°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
44 12am
56
56
29 3am
33
36
38 6am
40
21
22 9am
16
16
16 12pm
16
17
17 3pm
17
17
17 6pm
17
17
24 9pm
44
44
Station readings 48h ago
AQI 17
PM2.5 4.1 µg/m³ · 48h ago
AD 728×90

Air Quality Index Trend

45h · 6 stn

St Helens's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

44.9%
Humidity
62.6 km/h
Wind W
1007.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
7.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for St Helens?

Temperature & Precipitation

PM2.5 Trend

45h · 6 stations
PM2.57.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
7.0
Median
7.1
Average
6.5
Low
7.4
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +2.8

What is the 7-day forecast for St Helens?

08-03
23.3° 18.7°
08-04
20.8° 13.7°
0.13 mm
08-05
19.6° 14.1°
0.44 mm
08-06
20.9° 14.5°
0.69 mm
08-07
19.3° 13.5°
0.75 mm
08-08
21.3° 14.0°
0.19 mm
08-09
16.2° 13.0°
0.13 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near St Helens?

33
Warrington, United Kingdom
10.3 km PM2.5: 7.9 µg/m³
29
Glazebury, United Kingdom
17.3 km PM2.5: 7.0 µg/m³
16
Glazebury, United Kingdom
17.3 km PM2.5: 3.8 µg/m³
29
Wirral Tranmere, United Kingdom
21.0 km PM2.5: 7.0 µg/m³
59
Salford M60, United Kingdom
24.0 km PM2.5: 15.9 µg/m³
32
Salford M60, United Kingdom
24.0 km PM2.5: 7.7 µg/m³

What cities are near St Helens?

28 Haydock 30 Prescot 28 Ashton in Makerfield 30 Huyton 28 Newton-le-Willows 30 Great Sankey 28 Golborne 30 Widnes 31 Belle Vale 30 Kirkby
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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 2026-08-08T02:10 UTC.