What is the air quality in Winchester today?

The current Air Quality Index (AQI) in Winchester is 44 (Good). PM2.5 concentration is 10.51 µg/m³.

What is the temperature in Winchester right now?

The current temperature in Winchester is 11.9°C (feels like 11.9°C). Humidity is 77.5% and wind speed is 42.7 km/h.

Is it safe to go outside in Winchester?

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

Air Quality in Winchester, United Kingdom

Drizzle

11.9°C · 77.5% humidity

11.9°

Feels 11.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

47h · 1 stn

View full history →

Winchester'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.

77.5%

Humidity

42.7 km/h

Wind N

1019.5 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

10.51 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Winchester?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.510.51 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (3 stations within 25 km)

10.51

Median

8.67

Average

5.5

Low

14.0

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -4.7

Both models agree Avg diff: 3.8°C

Where are air quality stations near Winchester?

Chilbolton Observatory, United Kingdom

12.6 km PM2.5: 14.0 µg/m³

Southampton Centre, United Kingdom

18.3 km PM2.5: 6.0 µg/m³

IBASINGS39

23.9 km PM2.5: 6.4 µg/m³ PM10: 8.3 µg/m³

What cities are near Winchester?

27 Bishopstoke 27 Eastleigh 33 Romsey 23 Hedge End 23 Southampton 23 Totton 55 Andover 23 Hythe 25 Fareham 27 Alton

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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 2026-10-21T13:14 UTC.