Air Quality in Portsmouth, United Kingdom
Drizzle
16.6°C · 68.3% humidity
16.6°
Feels 16.6°
44
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Portsmouth's air quality — share it
AQI Forecast
54
4pm
54
54
44
7pm
47
49
50
10pm
51
52
53
1am
53
53
54
4am
54
54
54
7am
34
34
54
10am
34
34
34
1pm
34
34
Air Quality Index Trend
45h · 3 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.
68.3%
Humidity
35.7 km/h
Wind ESE
1029.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
10.47 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Portsmouth?
Temperature & Precipitation
PM2.5 Trend
45h · 3 stationsPM2.510.47 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
10.47
Median
7.6
Average
4.6
Low
10.6
High
PM2.5 µg/m³ · Model: 9.75 · Bias: -0.7
What is the 7-day forecast for Portsmouth?
09-05
19.3° 13.6°
0.31 mm
09-06
20.1° 12.6°
2.31 mm
09-07
17.0° 14.9°
1.44 mm
09-08
19.7° 11.3°
09-09
18.5° 11.8°
1.13 mm
09-10
19.1° 17.4°
0.38 mm
09-11
17.2° 15.1°
0.06 mm
Both models agree
Avg diff: 2.4°C
Where are air quality stations near Portsmouth?
30
Portsmouth, United Kingdom
30
Portsmouth, United Kingdom
28
Southampton Centre, United Kingdom
27
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 2026-09-05T18:58 UTC.