Stay updated with real-time air quality in Cheltenham, Gloucestershire 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)
29
Good
Cheltenham, Gloucestershire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.27 μg/m³
0
55
155
255
425
605+
31.20 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
7.03 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Cheltenham, Gloucestershire
Cheltenham, Gloucestershire
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AQI 27
Good
3.67μg/m³
PM2.5
8.47μg/m³
PM10
28.92ppb
O3
0.52ppb
SO2
5.50ppb
NO2
0.12ppm
CO
AQI 31
Good
3.40μg/m³
PM2.5
8.88μg/m³
PM10
32.58ppb
O3
0.57ppb
SO2
6.48ppb
NO2
0.12ppm
CO
AQI 31
Good
3.41μg/m³
PM2.5
8.95μg/m³
PM10
32.75ppb
O3
0.57ppb
SO2
6.57ppb
NO2
0.12ppm
CO
AQI 30
Good
3.45μg/m³
PM2.5
8.72μg/m³
PM10
32.37ppb
O3
0.53ppb
SO2
5.22ppb
NO2
0.12ppm
CO
AQI 32
Good
3.50μg/m³
PM2.5
9.61μg/m³
PM10
34.59ppb
O3
0.58ppb
SO2
6.85ppb
NO2
0.12ppm
CO
AQI 31
Good
3.68μg/m³
PM2.5
9.70μg/m³
PM10
33.02ppb
O3
0.57ppb
SO2
7.06ppb
NO2
0.12ppm
CO
The air quality data for Gloucestershire, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Cheltenham, Gloucestershire are available every hour.
Cheltenham, Gloucestershire experienced its worst air quality at 09:00:00, 2026-05-13.
The best air quality in Cheltenham, Gloucestershire was observed at 10:00:00 on 2026-05-14.
The air quality in Cheltenham, Gloucestershire right now is Good, with an AQI of 29.
In Cheltenham, Gloucestershire, O3 is the most frequently found pollutant.
When air quality in Cheltenham, Gloucestershire is compromised, staying indoors and wearing a mask can reduce health risks.
Cheltenham, Gloucestershire currently has a PM2.5 concentration of 3.549 μg/m3.
Cheltenham, Gloucestershire currently has a PM10 concentration of 8.274 μg/m3.
The current carbon monoxide (CO) level in Cheltenham, Gloucestershire is 0.108 ppm.
The current sulfur dioxide (SO2) concentration in Cheltenham, Gloucestershire is 0.514 ppb.
Cheltenham, Gloucestershire currently has an ozone (O3) concentration of 31.198 ppm.
The current level of nitrogen dioxide (NO2) in Cheltenham, Gloucestershire is 7.03 ppb.
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