Wednesday's #AirPollution
forecast from @metoffice.gov.uk and @emmahardymp.bsky.social failed to mention HIGH 8-hr ozone or the likelihood of 1-hr ozone triggering a second national #PollutionAlert or the ongoing #PollutionAlert. They need to do better to warn people. Much better
forecast from @metoffice.gov.uk and @emmahardymp.bsky.social failed to mention HIGH 8-hr ozone or the likelihood of 1-hr ozone triggering a second national #PollutionAlert or the ongoing #PollutionAlert. They need to do better to warn people. Much better
August 14, 2025 at 7:15 AM
Wednesday's #AirPollution
forecast from @metoffice.gov.uk and @emmahardymp.bsky.social failed to mention HIGH 8-hr ozone or the likelihood of 1-hr ozone triggering a second national #PollutionAlert or the ongoing #PollutionAlert. They need to do better to warn people. Much better
forecast from @metoffice.gov.uk and @emmahardymp.bsky.social failed to mention HIGH 8-hr ozone or the likelihood of 1-hr ozone triggering a second national #PollutionAlert or the ongoing #PollutionAlert. They need to do better to warn people. Much better
#CodeRed advisory | First signs of HIGH ozone #AirPollution over next 10 days starting MODERATE in southern England by National #CleanAirDay (Thursday 19 June 2025). Ozone - the most-irritant gas for humans - may trigger National #PollutionAlert by Monday 23/6 cleanair.london/health/pollu...
June 15, 2025 at 8:49 PM
#CodeRed advisory | First signs of HIGH ozone #AirPollution over next 10 days starting MODERATE in southern England by National #CleanAirDay (Thursday 19 June 2025). Ozone - the most-irritant gas for humans - may trigger National #PollutionAlert by Monday 23/6 cleanair.london/health/pollu...
Official #CodeRed | @emmahardymp.bsky.social issued national #PollutionAlert (1-hr ozone>180ug/m3) as @sianberry.bsky.social rose to present #CleanAir (Human Rights) Bill #EllasLaw in @ukparliament.parliament.uk YOU COULDN'T MAKE IT UP! uk-air.defra.gov.uk/latest/perio... ps more possible today...
July 1, 2025 at 2:25 PM
Official #CodeRed | @emmahardymp.bsky.social issued national #PollutionAlert (1-hr ozone>180ug/m3) as @sianberry.bsky.social rose to present #CleanAir (Human Rights) Bill #EllasLaw in @ukparliament.parliament.uk YOU COULDN'T MAKE IT UP! uk-air.defra.gov.uk/latest/perio... ps more possible today...
Terrible day for particle and ozone #AirPollution on Wednesday. National #PollutionAlert remains in force until 5pm Thursday. Relief for most on Thursday << Warnings from @london.gov.uk (and rain) may have helped save London from the worst HT @sadiqkhanlondon.bsky.social @metecoban92.bsky.social
August 14, 2025 at 7:03 AM
Terrible day for particle and ozone #AirPollution on Wednesday. National #PollutionAlert remains in force until 5pm Thursday. Relief for most on Thursday << Warnings from @london.gov.uk (and rain) may have helped save London from the worst HT @sadiqkhanlondon.bsky.social @metecoban92.bsky.social
⚡⚡High #AirPollution alert in London ⚡⚡
We are experiencing high levels of particulate matter in London today. Please don't drive or burn. uk-air.defra.gov.uk
Join our schools #AirPollution alert system (London only) if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
We are experiencing high levels of particulate matter in London today. Please don't drive or burn. uk-air.defra.gov.uk
Join our schools #AirPollution alert system (London only) if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
March 10, 2025 at 1:43 PM
⚡⚡High #AirPollution alert in London ⚡⚡
We are experiencing high levels of particulate matter in London today. Please don't drive or burn. uk-air.defra.gov.uk
Join our schools #AirPollution alert system (London only) if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
We are experiencing high levels of particulate matter in London today. Please don't drive or burn. uk-air.defra.gov.uk
Join our schools #AirPollution alert system (London only) if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
10/... This is already the worst ozone #AirPollution episode for three years with four monitors triggering national #PollutionAlert (<180uh/m3 1-hr ave ozone). And it's just getting started uk-air.defra.gov.uk/news
June 19, 2025 at 8:50 PM
10/... This is already the worst ozone #AirPollution episode for three years with four monitors triggering national #PollutionAlert (<180uh/m3 1-hr ave ozone). And it's just getting started uk-air.defra.gov.uk/news
🔴 #CodeRed | National #PollutionAlert in force until 8pm Wednesday 13 August 2025. Major ozone and particle #AirPollution episode ongoing across UK. Further alerts likely by 6pm today cleanair.london/health/pollu...
August 13, 2025 at 8:20 AM
🔴 #CodeRed | National #PollutionAlert in force until 8pm Wednesday 13 August 2025. Major ozone and particle #AirPollution episode ongoing across UK. Further alerts likely by 6pm today cleanair.london/health/pollu...
🚨Code Red🚨 | We're upgrading our health alert to HIGH ozone #AirPollution in southern and central England on Tuesday and Wednesday (12-13/8). National #PollutionAlert highly likely by 6pm each day. Ozone is the most-irritant gas for humans. Don't burn🔥. Check health advice ⛑️
August 11, 2025 at 7:37 AM
🚨Code Red🚨 | We're upgrading our health alert to HIGH ozone #AirPollution in southern and central England on Tuesday and Wednesday (12-13/8). National #PollutionAlert highly likely by 6pm each day. Ozone is the most-irritant gas for humans. Don't burn🔥. Check health advice ⛑️
#CodeRed advisory until Sunday | Major ozone #AirPollution episode smothering UK from National #CleanAirDay (Thursday 19 June 2025) until Sunday. We consider it 75% likely that 8-hr rolling ave ozone will exceed 161ug/m3 and/or 1-hr will exceed 180ug/m3 to trigger National #PollutionAlert
June 18, 2025 at 7:06 AM
#CodeRed advisory until Sunday | Major ozone #AirPollution episode smothering UK from National #CleanAirDay (Thursday 19 June 2025) until Sunday. We consider it 75% likely that 8-hr rolling ave ozone will exceed 161ug/m3 and/or 1-hr will exceed 180ug/m3 to trigger National #PollutionAlert
Official #CodeRed #PollutionAlert will remain in force for London and South East England until at least Friday evening (20/6/25) after ozone #AirPollution triggered the ‘Information Threshold’ in the #AirQuality Standards Regulations 2010 on Thursday (1-hr>180ug/m3) uk-air.defra.gov.uk
June 20, 2025 at 5:27 AM
Official #CodeRed #PollutionAlert will remain in force for London and South East England until at least Friday evening (20/6/25) after ozone #AirPollution triggered the ‘Information Threshold’ in the #AirQuality Standards Regulations 2010 on Thursday (1-hr>180ug/m3) uk-air.defra.gov.uk
Update 10pm 2200 BST (1 July 2025) | #Sibton 8-hr average ozone #AirPollution was 160ug/m3. 161 would have triggered HIGH on Defra’s DAQI 🙄 << No mention of possible HIGH or #PollutionAlert in Defra’s forecast today cc @metoffice.gov.uk
July 1, 2025 at 10:06 PM
Update 10pm 2200 BST (1 July 2025) | #Sibton 8-hr average ozone #AirPollution was 160ug/m3. 161 would have triggered HIGH on Defra’s DAQI 🙄 << No mention of possible HIGH or #PollutionAlert in Defra’s forecast today cc @metoffice.gov.uk
⚡⚡High #AirPollution tomorrow in London ⚡⚡
London is experiencing high levels of particulate matter. Please don't drive or burn. londonair.org.uk/LondonAir/Fo...
Join our London schools #AirPollution alert system if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
London is experiencing high levels of particulate matter. Please don't drive or burn. londonair.org.uk/LondonAir/Fo...
Join our London schools #AirPollution alert system if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
March 19, 2025 at 3:08 PM
⚡⚡High #AirPollution tomorrow in London ⚡⚡
London is experiencing high levels of particulate matter. Please don't drive or burn. londonair.org.uk/LondonAir/Fo...
Join our London schools #AirPollution alert system if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
London is experiencing high levels of particulate matter. Please don't drive or burn. londonair.org.uk/LondonAir/Fo...
Join our London schools #AirPollution alert system if you'd like us to send you info on high pollution days: bit.ly/pollutionalert
Update 5pm 1700 BST | Eastern England looks set to trigger HIGH on Defra’s Daily Air Quality Index this evening ie as well as a national #PollutionAlert. Watch this space
July 1, 2025 at 5:03 PM
Update 5pm 1700 BST | Eastern England looks set to trigger HIGH on Defra’s Daily Air Quality Index this evening ie as well as a national #PollutionAlert. Watch this space
Breaking news | Defra issues #PollutionAlert for London on #CleanAirDay hours after @adrianramsay.bsky.social joined our call for Metro Mayors and Defra to send press releases to media and weather forecasters warning them about the worst ozone #AirPollution episode for two years uk-air.defra.gov.uk
June 19, 2025 at 5:19 PM
Breaking news | Defra issues #PollutionAlert for London on #CleanAirDay hours after @adrianramsay.bsky.social joined our call for Metro Mayors and Defra to send press releases to media and weather forecasters warning them about the worst ozone #AirPollution episode for two years uk-air.defra.gov.uk
Official (Fri 10/7/26) | 24-hr EXTREME #PollutionAlert in force for #BIRMINGHAM and #COVENTRY until 8pm today. Widespread 🟠AMBER #AirPollution HEALTH ALERT across southern UK. Possible 🔴RED HEALTH ALERT again. Breeze bringing some relief by weekend but polluted easterly uk-air.defra.gov.uk
July 10, 2026 at 7:29 AM
Official (Fri 10/7/26) | 24-hr EXTREME #PollutionAlert in force for #BIRMINGHAM and #COVENTRY until 8pm today. Widespread 🟠AMBER #AirPollution HEALTH ALERT across southern UK. Possible 🔴RED HEALTH ALERT again. Breeze bringing some relief by weekend but polluted easterly uk-air.defra.gov.uk
Official #CodeRed | @emmahardymp.bsky.social issues 24-hr #PollutionAlert for ozone #AirPollution 5pm Friday after 1-hr ave breached 180ug/m3 legal threshold in Birmingham by 3pm. More alerts expected today << No mention in @metoffice.gov.uk Defra forecast today uk-air.defra.gov.uk/latest/perio...
July 11, 2025 at 4:26 PM
Official #CodeRed | @emmahardymp.bsky.social issues 24-hr #PollutionAlert for ozone #AirPollution 5pm Friday after 1-hr ave breached 180ug/m3 legal threshold in Birmingham by 3pm. More alerts expected today << No mention in @metoffice.gov.uk Defra forecast today uk-air.defra.gov.uk/latest/perio...
16/... Oddly at 9am Saturday 21 June Defra is showing the only national #PollutionAlert as a London one from Thursday which expired last night. Seems they're keener to highlight pollution in London than the UK-wide problem🤔 cc @emmahardymp.bsky.social @sadiqkhanlondon.bsky.social uk-air.defra.gov.uk
June 21, 2025 at 8:30 AM
16/... Oddly at 9am Saturday 21 June Defra is showing the only national #PollutionAlert as a London one from Thursday which expired last night. Seems they're keener to highlight pollution in London than the UK-wide problem🤔 cc @emmahardymp.bsky.social @sadiqkhanlondon.bsky.social uk-air.defra.gov.uk
6/... 1-hr ozone reached 160-170 ug/m3 this evening and is staying at dangerous levels overnight. We may be the only ones who 'predict' 1-hr ozone but UK looks set to trigger a national #PollutionAlert on the eve of #LocalElections #LE25 (95% confidence) c6pm? uk-air.defra.gov.uk/latest/perio...
April 29, 2025 at 8:27 PM
6/... 1-hr ozone reached 160-170 ug/m3 this evening and is staying at dangerous levels overnight. We may be the only ones who 'predict' 1-hr ozone but UK looks set to trigger a national #PollutionAlert on the eve of #LocalElections #LE25 (95% confidence) c6pm? uk-air.defra.gov.uk/latest/perio...
A reminder that if you’re in London, you can sign up for our school #AirPollution alerts system.
Whenever @london.gov.uk issues a high pollution alert for London, we send out emails to pass on to your child's school - with a pre-drafted message that can be sent out to parents. bit.ly/pollutionalert
Whenever @london.gov.uk issues a high pollution alert for London, we send out emails to pass on to your child's school - with a pre-drafted message that can be sent out to parents. bit.ly/pollutionalert
Pollution alerts for London
Mums for Lungs is a group of parents and carers worried about the health impacts of air pollution on children. We want to ensure that schools across our capital are aware of high pollution episodes an...
bit.ly
March 6, 2026 at 3:20 PM
A reminder that if you’re in London, you can sign up for our school #AirPollution alerts system.
Whenever @london.gov.uk issues a high pollution alert for London, we send out emails to pass on to your child's school - with a pre-drafted message that can be sent out to parents. bit.ly/pollutionalert
Whenever @london.gov.uk issues a high pollution alert for London, we send out emails to pass on to your child's school - with a pre-drafted message that can be sent out to parents. bit.ly/pollutionalert
#CodeRed advisory | Major MODERATE ozone #AirPollution episode building from Wednesday. Possibly HIGH by Friday in some places and/or 1-hr #PollutionAlert by Friday ps ozone is the most-irritant gas for humans cleanair.london/health/pollu...
July 7, 2025 at 8:30 AM
#CodeRed advisory | Major MODERATE ozone #AirPollution episode building from Wednesday. Possibly HIGH by Friday in some places and/or 1-hr #PollutionAlert by Friday ps ozone is the most-irritant gas for humans cleanair.london/health/pollu...
#CodeRed advisory until Sunday | Major ozone #AirPollution episode affecting the UK from National #CleanAirDay (Thursday 19 June 2025). 75% chance that 8-hr avg ozone will exceed 161ug/m3 or 1-hr will exceed 180ug/m3, triggering a National #PollutionAlert via @cleanairlondon.bsky.social
June 18, 2025 at 8:40 AM
#CodeRed advisory until Sunday | Major ozone #AirPollution episode affecting the UK from National #CleanAirDay (Thursday 19 June 2025). 75% chance that 8-hr avg ozone will exceed 161ug/m3 or 1-hr will exceed 180ug/m3, triggering a National #PollutionAlert via @cleanairlondon.bsky.social
🟣 #CodePurple | National #PollutionAlert for ozone likely (90%) to be triggered in London and southern UK by 6pm Tuesday ie 1-hr over 180 ug/m3. Possible 🔴 #CodeRed HIGH health index alert ie 8-hr over 161 ug/m3 cleanair.london/health/pollu.... Get our #CleanAirCities app (pinned at top) for more
August 12, 2025 at 7:20 AM
🟣 #CodePurple | National #PollutionAlert for ozone likely (90%) to be triggered in London and southern UK by 6pm Tuesday ie 1-hr over 180 ug/m3. Possible 🔴 #CodeRed HIGH health index alert ie 8-hr over 161 ug/m3 cleanair.london/health/pollu.... Get our #CleanAirCities app (pinned at top) for more
#CodeRed update (1 May 2025): Major particle and ozone #AirPollution continues today. HIGH expected in eastern England but not mentioned by @emmahardymp.bsky.social. Official #PollutionAlert still likely c6pm
May 1, 2025 at 4:59 AM
#CodeRed update (1 May 2025): Major particle and ozone #AirPollution continues today. HIGH expected in eastern England but not mentioned by @emmahardymp.bsky.social. Official #PollutionAlert still likely c6pm
Thank you everyone who read/shared our posts about latest RED OZONE #AirPollution episode (June 2026). Six monitors triggered #PollutionAlert. Four zones hit HIGH health band. Anyone see an official press release (except from @sadiqkhanlondon.bsky.social)? Next episode could start by Friday 3 July
June 28, 2026 at 9:14 AM
Thank you everyone who read/shared our posts about latest RED OZONE #AirPollution episode (June 2026). Six monitors triggered #PollutionAlert. Four zones hit HIGH health band. Anyone see an official press release (except from @sadiqkhanlondon.bsky.social)? Next episode could start by Friday 3 July