Worst air pollution Chatsworth - Los Angeles, today and tomorrow

Today (20 September): Air quality in Chatsworth is moderate. AQI and PM10 are moderate; PM2.5 and NO2 are fair; O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 AM (PM10: 40.9/100).
Tomorrow (21 September 2026): Air quality in Chatsworth is fair. AQI improves to fair; PM10 decreases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (PM10: 34.3/100). Airmine updates local air quality forecasts four times daily.

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In Chatsworth, heavy vehicle traffic and general city activity keep background particulate matter and nitrogen dioxide levels elevated. Tree cover is limited nearby, restricting any natural filtering effect on local particulates. This general baseline tends to hold across nearby areas with similar traffic and land use. Actual air quality on a given day still depends heavily on local wind and weather conditions.

Today - 20 September | Pollution peaks at 03:00

AQI:

Moderate

40.9/100

PM2.5 (fine particles):

Fair

30.4/100

PM10 (coarse particles):

Moderate

40.9/100

NO2 (nitrogen dioxide):

Fair

37.7/100

O3 (ozone):

Good

17.6/100

SO2 (sulfur dioxide):

Good

0.7/100

CO (carbon monoxide):

Good

0.4/100

HCHO (formaldehyde):

Good

1.5/100

PM1 (ultrafine particles):

Good

6.4/100

Levels show the poorest local air quality during the day

Tomorrow - 21 September | Pollution peaks at 12:00

AQI:

Fair

34.3/100

PM2.5 (fine particles):

Fair

29.6/100

PM10 (coarse particles):

Fair

34.3/100

NO2 (nitrogen dioxide):

Fair

23.9/100

O3 (ozone):

Fair

27.6/100

SO2 (sulfur dioxide):

Good

0.9/100

CO (carbon monoxide):

Good

0.5/100

HCHO (formaldehyde):

Good

2.2/100

PM1 (ultrafine particles):

Good

6.4/100

Other Landmarks in Los Angeles

1100 Wilshire Abdi-Loyola Medical Building Abraham Lincoln Academy Museum of Motion Pictures Adams-Normandie African American Firefighter Museum Alla América Tropical Interpretative Center Andrés Pico Adobe Angeleno Heights Angels Flight Angelus Temple Arcade Theatre Arleta Arlington Heights Arts District Atwater Village Autry Museum of the American West Avila Adobe Baird Park Baldwin Hills Bank of America Building Banning Residence Museum Battleship USS Iowa Beachwood Canyon Bel Air Beverly Crest Beverly Glen Beverly Grove Beverlywood Birthplace of the Internet Board of Trade Building Bolton Hall Boyle Heights Bradbury Building Breed Street Shul Brentwood Brentwood Park Broad Contemporary Art Museum Bunker Hill Cahuenga Branch Los Angeles Public Library California African American Museum California Science Center Cameo Theatre Canoga Park Carthay Casa Encantada Castellammare Castle Heights Center for Land Use Interpretation Central-Alameda Century City Chartwell Mansion Chase Chateau Marmont Chatsworth Chesterfield Square Cheviot Hills Chicken Boy Chinatown Chinatown East Gate Chinatown Gateway Chinatown West Gate Chinese American Museum Civic Center Cleveland Park / Old Trapper's Convento Corky's Country Club Park Craft Contemporary Culver City Cursum Perficio Cypress Park Del Rey Discovery Cube Science Center Dolby Family Terrace Downtown Downtown Palace Theatre Drum Barracks Durham House Eagle Rock Eames House Earl Carroll Theatre Building East Gate entrance East Hollywood Echo Park Edmund D. Edelman Hollywood Bowl Museum Egyptian Theater El Capitan Theatre El Pueblo de Los Angeles Historical Monument El Sereno Elysian Park Elysian Valley Encino Ennis House Exposition Park Fairfax Fashion District FIDM Museum And Galleries Financial District Fine Arts Building First Church of Christ, Scientist Flight Path Museum LAX Florence Flower District Fort MacArthur Museum Fort Moore Pioneer Memorial Fowler Museum Gallery at REDCAT Gallery Row George C. Page Museum Getty Center Giannini Place Ginger Rogers Beach Glassell Park Glencrest Hills Go For Broke Monument Go For Broke National Education Center Google Spruce Goose Gramercy Park Grammy Museum Granada Hills Grave of Michael Jackson Greenacres Griffith Observatory Griffith Park Griffith Park Merry-Go-Round Griffith Park Train Rides Griffith Ranch Historical Monument Guaranty Building Guinness World Records Museum Hammer Museum Hancock Park Harbor City Harbor Gateway Harbor–Santa Monica Freeway Interchange Harvard Heights Harvard Park Haunted Picnic Table 29 Heritage Square Highland Park Highland Park Ebell Club Highland Theatre Historic Core Historic Filipinotown historic ranch house / park office Historic South-Central Hollyhock House Hollywood Hollywood and Vine Hollywood Dell Hollywood Entertainment Museum Hollywood Heritage Museum Hollywood Hills Hollywood Hills West Hollywood Sign Hollywood Theater Hollywood Walk of Fame Hollywood Wax Museum Holmby Hills Homer Laughlin Building Hotel Normandie Hotel Rosslyn Hyde Park Innes House Institute of Contemporary Art, Los Angeles Italian American Museum of Los Angeles Japanese American National Museum Jay Paley House Jefferson Jefferson Park Jewelry District Johnie's Coffee Shop Korean Friendship Bell Koreatown Kuruvungna Springs La Brea Tar Pits La Brea Tar Pits and Museum La Iglesia de Nuestra Señora la Reina de los Ángeles LA Live Steamers LA Plaza De Culturas Y Artes La Plaza United Methodist Church, Museum of Social Justice LACMA Lake Balboa Lake View Terrace Larchmont Larry Edmunds Bookshop Lee Drug Building Leimert Park Lighthouse Immersive (Los Angeles) Lincoln Heights Little Armenia Little Ethiopia Little Italy Little Tokyo Long Wharf in Santa Monica Los Angeles County Museum of Art Los Angeles Fire Department Museum and Memorial Los Angeles Light Los Angeles Maritime Museum Los Angeles Municipal Art Gallery Los Angeles Police Department Memorial to Fallen Officers Los Angeles Public Library Los Angeles Sister Cities Monument Los Angeles Theatre Los Encinos State Historic Park Los Feliz Lowell Ryan Projects Lummis Home Madame Tussaud's Manchester Square Mar Vista Mariachi Plaza Menlo Avenue-West Twenty-ninth Street Historic District Metro 417 Apartments Mid-City Mid-City Heights Mid-Wilshire Millennium Biltmore Hotel Miracle Mile Mission Hills Montecito Heights Mount Washington Munch Box Museum of Contemporary Art Museum of Death Museum of Jurassic Technology Museum of Selfies Museum of Tolerance National Japanese American Veterans Memorial Court Natural History Museum of Los Angeles County Nethercutt Museum Neutra Studio and Residences (VDL Research House) Nevin New Chinatown North Hills North Hollywood Northridge Onizuka Memorial Owlwood Estate Oxford Square Pacific Palisades Pacoima Palms Panorama City Pantages Theater Paramount Pictures Studio Tour Park La Brea Patriotic Hall Pengelly House Perry Mansion Petersen Automotive Museum Pico House Pico-Robertson Pico-Union Pit 91 Playa del Rey Playa Vista Point Fermin Lighthouse Porter Ranch Psychiatry: An Industry of Death Museum Pueblo de Los Ángeles Historical Monument Quinn's Rialto Nickelodeon Ralphs Grocery Store Ramona Gardens Rancho Park Reseda Reynier Village Ripley's Believe It or Not! Odditoriums RockWalk Rodney King beating/Arrest Site Roosevelt Rose Hill Roxie Theatre Runyon Canyon Salkin House San Pedro San Vicente Mountain Park Santa Monica Bay Santa Monica Pier Sawtelle Second Church of Christ, Scientist Shadow Hills Shane Building Sherman Oaks Shrine Auditorium Silver Lake Silver Lake Heights Siple House SKETCH Foundation Gallery Air and Space Exhibits Skid Row Skirball Cultural Center Skyspace LA South Bonnie Brae Tract Historic District South Carthay South Park South Park Lofts Southwest Museum of the American Indian Southwestern Law School Bullocks Building Spring Arcade Building Spring Street Courthouse SS Lane Victory Studio City Sun Valley Sunland Sunset Junction Sylmar Tarzana TCL Chinese Theatre Tehrangeles Thai Town The Assyrian Genocide Memorial Wall The Broad The Broad Museum The Brockman Lofts The Garbutt House The Geffen Contemporary The Getty Villa The Hollywood Museum The Institute for Art and Olfaction The J. Paul Getty Museum The Japanese Garden The Los Angeles Museum of Love The Playboy Mansion The Singer Building Theme Building Thien Hau Temple Timms' Point and Landing Toluca Lake Toy District Travel Town Museum Triforium Tujunga Tuna Canyon Detention Station UCLA Athletic Hall of Fame United Artists Theater Building Universal Studios Hollywood University Hills University Park USC Fisher Museum of Art USPO Terminal Annex Valley Glen Valley Relics Museum Valley Village Van Buren Place Historic District Van Nuys Venice Venice Beach Venice Canal Historic District Venice Fishing Pier Venice Japanese American Memorial Monument Vermont Knolls Vermont Square Vermont-Slauson Vibiana Victoria Park Village Green Virgil Village Warner Center Warner Pacific Theatre Building Watts West Adams West Adams Gateway Marker West Hills West Los Angeles Westchester Westdale Westlake Westside Village Westwood Westwood Village Whitley Heights Historic District Wilmington Wilshire Boulevard Temple Wiltern Theatre and Pellissier Building Wilton Historic District Windsor Square Winnetka Woodland Hills World Peace Bell Wurlitzer Building Yamashiro Yucca Corridor Ziegler House

Sports venues in Los Angeles

Bel-Air Country Club Los Angeles Country Club – North Course Riviera Country Club – Championship Course

Frequently Asked Questions

Is air quality bad in Chatsworth right now?

On 20 September 2026, overall air quality in Chatsworth is moderate. AQI is the main air quality indicator at 40.9/100. Pollution peaks around 3:00 AM (PM10: 40.9/100).

Will air quality be worse tomorrow in Chatsworth?

On 21 September 2026, air quality conditions in Chatsworth will be better than today, with AQI forecast at fair at 34.3/100. Pollution peaks around 12:00 PM (PM10: 34.3/100).

When is air pollution at its worst in Chatsworth?

From November to January, average wind speeds run around 13 km/h with temperatures near 10°C, calm and cool enough to let particulate matter and smoke build up near the ground rather than disperse. From June to August, temperatures average around 26°C, warm enough for strong sun and heat to drive ground-level ozone formation.

Are air quality levels in Chatsworth based on measurements or forecasts?

It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.

Why doesn’t the forecast always reflect wildfire impacts?

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.

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Data provided by Airmine — Last update: 20 September 2026 at 14:33 CEST (Data is updated four times daily.)

This forecast is produced independently using Airmine's own atmospheric data and models.

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.

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