{"groups":[{"group_name":"Very Unhealthy PM2.5","group_summary":"The most severe pocket reaches AQI 300, with an average of 212, across just 78 km². Its state location is not specified."},{"group_name":"Unhealthy PM2.5","group_summary":"Three zones cover 608 km², with average AQI 171. Fine particles drive these elevated readings; locations are not specified."},{"group_name":"Sensitive Groups","group_summary":"Ten zones span 2,332 km² at average AQI 116, mainly from PM2.5. Sensitive people may face increased health risk."},{"group_name":"Moderate PM2.5","group_summary":"Moderate air covers about 220,576 km² across 23 zones, with average AQI 58. PM2.5 is the leading pollutant."},{"group_name":"Broadly Good Air","group_summary":"Good air covers about 5.32 million km², roughly 96% of the mapped area. Listed zones include much of the eastern US and western states such as CA, OR, WA and NV."}],"briefing_sections":[{"title":"Pollution Pattern","facts":[{"label":"Dominant parameters","value":"o3, pm25","detail":null,"detail_display":null,"tone":"default","item_ref":null}]},{"title":"Surface Coverage","facts":[{"label":"Mapped area","value":"5,539,522 km2","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Largest zone area","value":"2,707,017 km2","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Surface run","value":"Oct 6, 2026, 6:13 PM UTC","detail":null,"detail_display":null,"tone":"default","item_ref":null},{"label":"Largest surface zone","value":"Good - AL, AR, CT +28 - 2,707,017 km2","detail":null,"detail_display":null,"tone":"default","item_ref":{"family":"airQuality","id":"aqz_Good_CA,US_0_6b74efd32592cc70","kind":"air_quality_surface_zone"}}]}],"stats":{"surface_zone_count":59,"total_area_km2":5539521.623446406,"worst_category":"Very Unhealthy","worst_air_quality_surface_zone_id":"aqz_Very Unhealthy_US_0_115f2f8981ad0815","dominant_parameters":["o3","pm25"],"stations":4103,"max_area_km2":2707017.0171909886,"run_completed_at":"2026-10-06T18:13:11.055661Z","category_breakdown":[{"category":"Good","count":22,"area_km2":5315926.788301174,"aqi_max":50,"aqi_avg":25.0277,"dominant_parameters":["o3"]},{"category":"Moderate","count":23,"area_km2":220576.418159216,"aqi_max":100,"aqi_avg":58.4436,"dominant_parameters":["pm25"]},{"category":"Unhealthy for Sensitive Groups","count":10,"area_km2":2331.7029730008617,"aqi_max":150,"aqi_avg":115.6499,"dominant_parameters":["pm25"]},{"category":"Unhealthy","count":3,"area_km2":608.2843953563656,"aqi_max":200,"aqi_avg":170.8399,"dominant_parameters":["pm25"]},{"category":"Very Unhealthy","count":1,"area_km2":78.4296176612352,"aqi_max":300,"aqi_avg":211.5977,"dominant_parameters":["pm25"]}],"top_zones":[{"air_quality_surface_zone_id":"aqz_Good_CA,US_0_6b74efd32592cc70","category":"Good","area_km2":2707017.0171909886,"aqi_avg":25.027746223780543,"dominant_parameter":"o3","available_parameters":["co","no2","o3","pm10","pm25","so2"],"state_abbrs":["AL","AR","CT","DC","DE","FL","GA","IA","IL","IN","KY","MA","MD","ME","MI","MN","MO","MS","NC","NH","NJ","NY","OH","PA","RI","SC","TN","VA","VT","WI","WV"]},{"air_quality_surface_zone_id":"aqz_Good_CA,MX,US_1_0fc031a15ded01ba","category":"Good","area_km2":1415081.8604732996,"aqi_avg":25.027746223780543,"dominant_parameter":"o3","available_parameters":["co","no2","o3","pm10","pm25","so2"],"state_abbrs":["AZ","CA","CO","ID","MT","NV","OR","UT","WA","WY"]},{"air_quality_surface_zone_id":"aqz_Good_US_2_5fc470e7534132d2","category":"Good","area_km2":284175.5123289271,"aqi_avg":25.027746223780543,"dominant_parameter":"o3","available_parameters":["co","no2","o3","pm10","pm25","so2"],"state_abbrs":["AL","FL","LA","MS","OK","TX"]},{"air_quality_surface_zone_id":"aqz_Good_US_3_4d6179e4473b42fc","category":"Good","area_km2":199105.6819815488,"aqi_avg":25.027746223780543,"dominant_parameter":"o3","available_parameters":["co","no2","o3","pm10","pm25","so2"],"state_abbrs":["AR","IA","KS","MO","NE","OK"]},{"air_quality_surface_zone_id":"aqz_Good_MX,US_4_444864fcd67b7c13","category":"Good","area_km2":105169.86039369176,"aqi_avg":25.027746223780543,"dominant_parameter":"o3","available_parameters":["co","no2","o3","pm10","pm25","so2"],"state_abbrs":["AZ"]}]},"created_at":"2026-10-06T18:13:23.843005Z","model":"gpt-6-luna","usage":{"input_tokens":1434,"input_tokens_details":{"cache_write_tokens":0,"cached_tokens":0},"output_tokens":510,"output_tokens_details":{"reasoning_tokens":264},"total_tokens":1944},"message":null,"country_code":"US","state_abbr":null,"view":"surface_zones","tiles_version":18250,"tiles_updated_at":"2026-10-06T18:13:13.985496Z"}