Air Quality in Portsmouth, United Kingdom
Windy
17.6°C · 46.0% humidity
17.6°
Feels 17.6°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Portsmouth's air quality — share it
AQI Forecast
54
12am
34
54
23
3am
32
38
43
6am
26
21
23
9am
22
23
23
12pm
24
26
26
3pm
34
34
34
6pm
34
34
34
9pm
27
27
Air Quality Index Trend
48h · 1 stnPortsmouth'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.
46.0%
Humidity
48.9 km/h
Wind NE
1013.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.51 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Portsmouth?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.55.51 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
5.51
Median
5.65
Average
5.5
Low
5.8
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +4.5
What is the 7-day forecast for Portsmouth?
07-22
18.6° 17.6°
07-23
20.5° 17.1°
0.06 mm
07-24
18.3° 16.2°
1.31 mm
07-25
20.9° 14.6°
1.19 mm
07-26
19.0° 14.6°
1.38 mm
07-27
20.6° 17.8°
5.12 mm
07-28
22.3° 17.3°
0.06 mm
Both models agree
Avg diff: 2.8°C
Where are air quality stations near Portsmouth?
70
Portsmouth, United Kingdom
28
Portsmouth, United Kingdom
34
Southampton Centre, United Kingdom
30
Southampton Centre, United Kingdom
What cities are near Portsmouth?
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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 2026-07-22T02:17 UTC.