Air quality index
United Kingdom
Columns: Index | Ozone, Running 8 hourly mean (μg/m 3 ) | Nitrogen Dioxide, Hourly mean (μg/m 3 ) | Sulphur Dioxide, 15 minute mean (μg/m 3 ) | PM10 Particles, 24 hour mean (μg/m 3 ) | PM2.5 Particles, 24 hour mean (μg/m 3 )
1 | 0-33 | 0-66 | 0-88 | 0-11 | 0-16 | 2 | 34-65 | 67-133 | 89-176 | 12-23 | 17-33 | 3 | 66-99 | 134-199 | 177-265 | 24-34 | 34-49 | 4 | 100-120 | 200-267 | 266-354 | 35-41 | 50-58 | 5 | 121-140 | 268-334 | 355-442 | 42-46 | 59-66 | 6 | 141-159 | 335-399 | 443-531 | 47-52 | 67-74 | 7 | 160-187 | 400-467 | 530-708 | 53-58 | 75-83 | 8 | 188-213 | 468-534 | 709-886 | 59-64 | 84-91 | 9 | 214-239 | 535-599 | 887-1063 | 65-69 | 92-99