Air Quality Forecast + Agricultural Burn Status



VCAPCD Smoke Advisory for Monday, December 11th, 2017

The Thomas Fire started on the evening of Monday, December 4th, 2017 near Highway 150 north of Santa Paula. As of 8 a.m. on December 11th, it has now burned 173,000 acres and is 15% contained. This fire is wind driven from a strong Santa Ana wind event and is causing heavy smoke in the plume and downwind of the fire in and around the cities of Ventura, Oxnard, Santa Paula, and Ojai. Offshore winds will dominate most of the day. However, there may be brief periods of onshore winds, especially in the afternoon. Active fire is burning above Fillmore and as far west as Santa Barbara County. Because of the location of the active fire and shifting winds, smoke concentration levels could change constantly throughout the day in any given area. Smoke impacts from these devastating fires are widespread. Air quality should be considered unhealthy in areas directly impacted by smoke. In the Ojai Valley and surrounding areas, the air quality is very unhealthful, even reaching hazardous levels at times. Hazardous is defined by the EPA as "Health warnings of emergency conditions. The entire population is more likely to be affected.” If you are in an area directly impacted by smoke, please exercise extreme caution and avoid vigorous outdoor or indoor exertion. People with respiratory or heart disease, the elderly, and children should remain indoors. Run your air conditioner if you have one. Keep the filter clean and fresh air intake closed. Close all windows and doors that lead outside to prevent bringing additional smoke inside. If this is not an option or it becomes extremely hot inside, please seek alternate shelter. For information regarding the fire, evacuation notices, road closures…etc…please check or the Twitter feed for the Ventura County Fire Department Public Information Officer, @vcfd_pio. Please check our website,, or our Twitter feed for the latest updates (@vcapcd). For more information or concerns, please call VCAPCD at (805) 662-6960. Thank you.

Agricultural Burn Regions
  1. Coastal (Ventura / Oxnard / Camarillo)
  2. Ojai Valley
  3. Fillmore and Piru
  4. Simi Valley and Moorpark
  5. Conejo Valley (Thousand Oaks)
  6. Northern Ventura County

Agricultural Burn Status for Monday, December 11, 2017
Burn Region123456 < 3k ft6 > 3k ft
Early Morning (7 a.m. - 10 a.m.)NoNoNoNoNoNoNo
Late Morning (10 a.m. - noon)NoNoNoNoNoNoNo
Afternoon (noon - 4 p.m.)NoNoNoNoNoNoNo
Permit Must be Obtained from a Ventura County Fire Station


Air Quality Index Report for Ozone (O3) and Particulates (PM)
Pollutant of Highest Concentration Shown

250 38
 Coastal Plain Ojai Valley Conejo Valley Fillmore/Piru Simi Valley
Recorded Yesterday (Dec 10)       Forecast Today (Monday)      Forecast Tomorrow (Tuesday)
1-50 Good51-100 Moderate101-150 Unhealthy for Sensitive Groups151-200 Unhealthy201-300 Very Unhealthy

Ventura County Temperature & Precipitation Report
Issued: 8 am Monday, December 11, 2017
RegionRecorded Yesterday (Sunday)Recorded 7 am Today (Monday)Forecast Today (Monday) & Tomorrow (Tuesday)
LowHighRain (in)LowRain (in)HighLowHigh
Coastal Plain (Ventura-Oxnard-Camarillo)69820430804379
Ojai Valley47840430844284
Conejo Valley (Thousand Oaks)60770550795179
Fillmore - Piru62760570785379
Simi Valley66760580785479