What is the air quality in Portsmouth today?

The current Air Quality Index (AQI) in Portsmouth is 26 (Good). PM2.5 concentration is 6.2 µg/m³.

What is the temperature in Portsmouth right now?

The current temperature in Portsmouth is 12.4°C (feels like 12.4°C). Humidity is 85.7% and wind speed is 65.9 km/h.

Is it safe to go outside in Portsmouth?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Portsmouth, United Kingdom

Drizzle

12.4°C · 85.7% humidity

12.4°

Feels 12.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 3 stn

View full history →

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.

85.7%

Humidity

65.9 km/h

Wind NNE

1019.4 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Portsmouth?

Temperature & Precipitation

PM2.5 Trend

45h · 3 stations

PM2.56.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

6.2

Median

6.1

Average

6.0

Low

6.2

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -0.4

What is the 7-day forecast for Portsmouth?

10-21

13.3° 6.6°

1.31 mm

10-22

18.5° 10.1°

0.19 mm

10-23

14.2° 10.9°

8.12 mm

10-24

14.9° 10.7°

0.06 mm

10-25

16.2° 11.7°

7.69 mm

10-26

13.1° 10.3°

0.81 mm

10-27

17.6° 6.2°

2.56 mm

Both models agree Avg diff: 3.1°C

Where are air quality stations near Portsmouth?

Portsmouth, United Kingdom

3.7 km PM2.5: 6.2 µg/m³

Southampton Centre, United Kingdom

24.6 km PM2.5: 6.0 µg/m³

What cities are near Portsmouth?

26 Southsea 26 Gosport 26 South Hayling 26 Fareham 26 Hayling Island 26 Ryde 26 Havant 26 Waterlooville 26 Emsworth 25 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 2026-10-21T13:15 UTC.