Air Quality in Winchester, United States

Rain
15.3°C · 71.4% humidity
15.3°
Feels 15.3°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
24 5pm
24
24
38 8pm
35
32
30 11pm
29
28
26 2am
25
25
25 5am
24
24
24 8am
24
24
24 11am
24
24
24 2pm
24
24
AD 728×90

Air Quality Index Trend

42h · 1 stn

Winchester's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Winchester is 1.8× the WHO annual guideline of 5 µg/m³.

71.4%
Humidity
43.0 km/h
Wind NNE
1019.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
38
9.23 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

42h · 1 station
PM2.59.23 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
05-29
27.9° 8.0°
11.12 mm
05-30
25.8° 17.9°
0.25 mm
05-31
29.4° 8.7°
06-01
29.0° 15.6°
06-02
22.5° 11.3°
0.38 mm
06-03
24.3° 21.6°
8.69 mm
06-04
24.4° 20.8°
0.13 mm
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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 2026-05-29T00:19 UTC.