Stay updated with real-time air quality in Windsor, Windsor and Maidenhead featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
25
Good
Windsor, Windsor and Maidenhead
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.40 μg/m³
0
55
155
255
425
605+
27.11 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
10.83 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Windsor, Windsor and Maidenhead
Windsor, Windsor and Maidenhead
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AQI 28
Good
3.93μg/m³
PM2.5
12.27μg/m³
PM10
29.52ppb
O3
0.57ppb
SO2
13.99ppb
NO2
0.31ppm
CO
AQI 27
Good
3.95μg/m³
PM2.5
12.16μg/m³
PM10
29.50ppb
O3
0.57ppb
SO2
14.29ppb
NO2
0.31ppm
CO
AQI 27
Good
3.25μg/m³
PM2.5
8.86μg/m³
PM10
28.70ppb
O3
0.58ppb
SO2
10.83ppb
NO2
0.31ppm
CO
AQI 25
Good
4.38μg/m³
PM2.5
16.40μg/m³
PM10
27.11ppb
O3
0.58ppb
SO2
10.83ppb
NO2
0.31ppm
CO
AQI 27
Good
3.98μg/m³
PM2.5
12.02μg/m³
PM10
29.35ppb
O3
0.58ppb
SO2
15.08ppb
NO2
0.31ppm
CO
AQI 28
Good
3.96μg/m³
PM2.5
12.23μg/m³
PM10
29.97ppb
O3
0.58ppb
SO2
13.69ppb
NO2
0.31ppm
CO
Air quality measurements for Windsor and Maidenhead, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Windsor, Windsor and Maidenhead is updated on an hourly basis.
The worst air quality in Windsor, Windsor and Maidenhead was recorded at 10:00:00 on 2026-09-27.
The best air quality in Windsor, Windsor and Maidenhead was recorded at 04:00:00 on 2026-09-28.
The real-time air quality index in Windsor, Windsor and Maidenhead is 25, currently categorized as Good.
The most common pollutant in Windsor, Windsor and Maidenhead is O3.
If the air quality in Windsor, Windsor and Maidenhead is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Windsor, Windsor and Maidenhead at present are 4.383 μg/m3.
The current PM10 levels in Windsor, Windsor and Maidenhead are 16.4 μg/m3.
The current carbon monoxide (CO) level in Windsor, Windsor and Maidenhead is 0.312 ppm.
The current sulfur dioxide (SO2) levels in Windsor, Windsor and Maidenhead are 0.584 ppb.
The current ozone (O3) levels at Windsor, Windsor and Maidenhead is 27.11 ppm.
The current nitrogen dioxide (NO2) levels at Windsor, Windsor and Maidenhead is 10.83 ppb.
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