24 hour summary

The maximum pollutant concentrations measured during the last 24 hours across Kent and Medway are shown below. Summary graphs showing the last seven days are available for each pollutant in the left hand column of the table.

Switch to the current levels summary

Key: N/M: Not Measured

Key: N/A: Data Not Available

Monitoring site 8 Hour mean
Ozone
(µgm-3)		 Hourly mean
Nitrogen dioxide
(µgm-3)		 Max 15 min mean
Sulphur dioxide
(µgm-3)		 Running 24 Hour mean
PM2.5
Particles
(µgm-3)		 Running 24 Hour mean
PM10
Particles
(µgm-3)
Canterbury Military Road

Updated: 09/08/2026 12:00 		N/M 34
Low (1) 		N/M N/M N/M
Chatham Roadside

Updated: 09/08/2026 12:00 		N/M N/A N/M 6
Low (1) 		21
Low (2)
Dartford - St Clements 2

Updated: 09/08/2026 10:00 		N/M 40
Low (1) 		N/M N/M 17
Low (2)
Gravesham A2 Roadside

Updated: 09/08/2026 12:00 		N/M 64
Low (1) 		N/M N/M 12
Low (1)
London Bexley

Updated: 09/08/2026 12:00 		N/M 48
Low (1) 		N/M 6
Low (1) 		14
Low (1)
Maidstone Upper Stone Street

Updated: 09/08/2026 12:00 		N/M 83
Low (2) 		N/M 11
Low (1) 		24
Low (2)
Rochester Stoke

Updated: 09/08/2026 12:00 		128
Moderate (5) 		43
Low (1) 		6
Low (1) 		10
Low (1) 		18
Low (2)
Stanford-le-Hope Roadside

Updated: 09/08/2026 12:00 		N/M 45
Low (1) 		N/M 10
Low (1) 		17
Low (2)
Swale Newington 4

Updated: 09/08/2026 12:00 		N/M 30
Low (1) 		N/M 7
Low (1) 		15
Low (1)
Swale Ospringe Roadside 2

Updated: 09/08/2026 12:00 		N/M 65
Low (1) 		N/M N/M N/M
Swale St Pauls Street

Updated: 09/08/2026 12:00 		N/M 53
Low (1) 		N/M 9
Low (1) 		28
Low (2)
Thanet Birchington Roadside

Updated: 09/08/2026 12:00 		N/M 40
Low (1) 		N/M N/M 25
Low (2)
Thanet Ramsgate Roadside

Updated: 09/08/2026 12:00 		N/M 4
Low (1) 		N/M N/M 27
Low (2)
Thurrock

Updated: 09/08/2026 12:00 		101
Moderate (4) 		62
Low (1) 		5
Low (1) 		7
Low (1) 		16
Low (1)
Tonbridge and Malling, Borough Green Roadside

Updated: 09/08/2026 12:00 		N/M 32
Low (1) 		N/M N/M 16
Low (1)
Tonbridge High Street

Updated: 09/08/2026 12:00 		N/M 39
Low (1) 		N/M N/M N/M
Tunbridge Wells A26 Roadside

Updated: 09/08/2026 12:00 		N/M 50
Low (1) 		N/M 2
Low (1) 		25
Low (2)