Air Quality in Winchester, United Kingdom
Drizzle
16.7°C · 91.6% humidity
16.7°
Feels 16.7°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Winchester's air quality — share it
AQI Forecast
Calibrated
1
12am
1
1
32
3am
23
17
12
6am
9
7
5
9am
4
3
3
12pm
9
2
9
3pm
8
1
1
6pm
1
1
1
9pm
1
1
Station readings
1
1
CAMS model
adj -26
27
27
27
27
27
27
27
27
27
27
27
27
27
34
27
34
34
27
27
27
27
27
27
27
Air Quality Index Trend
46h · 1 stnWinchester'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.
91.6%
Humidity
95.4 km/h
Wind SW
1011.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.61 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Winchester?
Temperature & Precipitation
PM2.5 Trend
46h · 1 stationPM2.57.61 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
7.61
Median
5.85
Average
0.26
Low
9.6
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -1.5
What is the 7-day forecast for Winchester?
08-03
37.5° 16.7°
2.94 mm
08-04
24.6° 13.2°
08-05
23.8° 15.1°
0.19 mm
08-06
26.7° 13.5°
6.62 mm
08-07
26.8° 12.5°
0.44 mm
08-08
21.3° 12.8°
2.06 mm
08-09
20.7° 12.4°
Both models agree
Avg diff: 3.1°C
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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 2026-08-08T02:00 UTC.