Air Quality in Portsmouth, United Kingdom

Windy
9.5°C · 85.9% humidity
9.5°
Feels 5.1°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
25 11pm
25
25
22 2am
23
24
25 5am
26
26
26 8am
27
27
27 11am
25
25
27 2pm
27
27
27 5pm
27
27
27 8pm
27
27
AD 728×90

Air Quality Index Trend

47h · 1 stn

Portsmouth'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.

85.9%
Humidity
44.6 km/h
Wind WNW
1021.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.3 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Portsmouth?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.55.3 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
5.3
Median
5.3
Average
5.3
Low
5.3
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +0.9

What is the 7-day forecast for Portsmouth?

06-09
14.5° 9.5°
0.13 mm
06-10
16.0° 13.2°
9.31 mm
06-11
21.5° 14.3°
1.37 mm
06-12
19.8° 11.2°
06-13
18.1° 11.4°
06-14
19.8° 12.3°
2.25 mm
06-15
14.2° 12.0°
0.38 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Portsmouth?

18
Portsmouth, United Kingdom
3.7 km PM2.5: 4.3 µg/m³
24
Portsmouth, United Kingdom
3.7 km PM2.5: 5.8 µg/m³
29
Southampton Centre, United Kingdom
24.6 km PM2.5: 7.0 µg/m³
63
Southampton Centre, United Kingdom
24.6 km PM2.5: 17.8 µg/m³

What cities are near Portsmouth?

22 Southsea 22 Gosport 22 South Hayling 22 Fareham 22 Hayling Island 22 Ryde 22 Havant 22 Waterlooville 22 Emsworth 22 Cowes
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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 2026-06-09T01:05 UTC.