Chilbolton Observatory Air Pollution: Real-time Air Quality Index (AQI)

Chilbolton Observatory
Southampton Centre
Harwell
Portsmouth
Christchurch Barrack Road
Bournemouth
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Chilbolton Observatory AQI: Chilbolton Observatory Real-time Air Quality Index (AQI).
25
Good
Updated on Thursday 19:00
temperature: 21°C
currentpast 2 daysminmax
PM2.5 AQI
25Chilbolton Observatory, United Kingdom PM25 (fine particulate matter) measured by UK-AIR, air quality information resource - Defra, UK. Values are converted to the US EPA AQI standard.2575
PM10 AQI
10Chilbolton Observatory, United Kingdom PM10 (respirable particulate matter) measured by UK-AIR, air quality information resource - Defra, UK. Values are converted to the US EPA AQI standard.1063
O3 AQI
24Chilbolton Observatory, United Kingdom O3 (ozone) measured by UK-AIR, air quality information resource - Defra, UK. Values are converted to the US EPA AQI standard.2269
NO2 AQI
1Chilbolton Observatory, United Kingdom NO2 (nitrogen dioxide) measured by UK-AIR, air quality information resource - Defra, UK. Values are converted to the US EPA AQI standard.16
SO2 AQI
1Chilbolton Observatory, United Kingdom SO2 (sulfur dioxide) measured by UK-AIR, air quality information resource - Defra, UK. Values are converted to the US EPA AQI standard.11
Temp.
21Chilbolton Observatory, United Kingdom t (temp.) measured by Citizen Weather Observer Program (CWOP/APRS).1629
Pressure
1021Chilbolton Observatory, United Kingdom p (pressure:) measured by Citizen Weather Observer Program (CWOP/APRS).10121021
Humidity
64Chilbolton Observatory, United Kingdom h (humidity) measured by Citizen Weather Observer Program (CWOP/APRS).38100
Wind
4Chilbolton Observatory, United Kingdom w (wind) measured by Citizen Weather Observer Program (CWOP/APRS).17
MarkerMarkerMarkerMarkerMarker
map © OpenStreetMap contributors

Air Quality Forecast
THU 14
27°C
14°C
FRI 15
30°C
15°C
SAT 16
28°C
14°C
SUN 17
28°C
12°C
MON 18
28°C
13°C
PM2.5
O3
Thursday 14Friday 15Saturday 16Sunday 17Monday 18
hour
369121518210369121518210369121518210369121518210369121518210
Wind Speed (m/s)
3455665444434574666666655665545555555435








































Temp.
15°15°22°25°26°24°17°16°15°16°23°28°30°28°21°17°16°15°22°26°28°26°18°14°13°13°20°26°28°27°18°15°14°14°21°26°28°27°18°16°
relative humidity
97956647435482949491563830336384818653393435608081855337313672869389614235387181
barometric pressure
1016101710181018101810191022102310231024102510251023102310251026102610261027102510241023102510261025102510241023102210221023102310221023102210211019101910201019
total precipitation
NaNNaN
UVI:
4


5:52 ~ 20:31
UVI:
6


5:52 ~ 20:31
UVI:
6


5:53 ~ 20:29
UVI:
7


5:55 ~ 20:27
UVI:
4


5:56 ~ 20:25
Forecast plotted using timezone +01:00
Latest forecast updates:
Wind: 3 hours ago [Aug 14, 2025 5:14 PM]
fine particulate matter: 17 hours ago [Aug 14, 2025 2:51 AM]
ozone: 17 hours ago [Aug 14, 2025 2:53 AM]
click to view the detailed forecast

Air Quality Data provided by: UK-AIR, air quality information resource - Defra, UK (uk-air.defra.gov.uk)

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About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQIAir Pollution LevelHealth ImplicationsCautionary Statement (for PM2.5)
0 - 50GoodAir quality is considered satisfactory, and air pollution poses little or no riskNone
51 -100ModerateAir quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150Unhealthy for Sensitive GroupsMembers of sensitive groups may experience health effects. The general public is not likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200UnhealthyEveryone may begin to experience health effects; members of sensitive groups may experience more serious health effectsActive children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300Very UnhealthyHealth warnings of emergency conditions. The entire population is more likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+HazardousHealth alert: everyone may experience more serious health effectsEveryone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.


Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



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Temperature unit:
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