Pollen count and allergy info for Ontario
Ontario pollen and allergy report • 22:00, Nov 4
Index
High
Tree
Low
Grass
None
Weed
High
16°
3 km/h
96%Daily allergy forecast
Ontario pollen count forecast
Today  11 km/h 26°17° 25% | Thursday 7 km/h 28°18 ° 18% | Friday  9 km/h29°19° 14% |
Air pollutants
Air quality in Ontario today
AQI⁺
Air quality index
53AQI⁺ US
PM2.5
Fine particles (≤ 2.5 µm)
10µg/m³
Learn more about pollen in Ontario
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Where is the highest pollen level in California?
- Agoura Hills3
- Airport3
- Alhambra3
- Alondra Park3
- Altadena3
- Anaheim3
- Antioch3
- Arcadia3
- Artesia3
- Avocado Heights3
- Azusa3
- Baker3
- Baldwin Park3
- Bell3
- Bell Canyon3
- Bell Gardens3
- Bellflower3
- Beverly Hills3
- Bloomington3
- Blythe3
- Bonsall3
- Boonville3
- Borrego Springs3
- Bostonia3
- Bradbury3
- Brawley3
- Brea3
- Bret Harte3
- Buena Park3
- Burbank, Los Angeles County3
- Bystrom3
- Cabazon3
- Calexico3
- Calipatria3
- Camarillo3
- Canyon Lake3
- Capitola3
- Casa Conejo3
- Casa de Oro-Mount Helix3
- Castaic3
- Cathedral City3
- Ceres3
- Cerritos3
- Channel Islands Beach3
- Charter Oak3
- Chico3
- Chino3
- Chula Vista3
- Citrus3
- Claremont3
- Colton3
- Colusa County3
- Commerce3
- Compton3
- Corona3
- Coronita3
- Cotati3
- Covina3
- Cowan3
- Crest3
- Cudahy3
- Culver City3
- Cypress3
- Davis3
- Del Dios3
- Desert Edge3
- Desert Hot Springs3
- Desert Shores3
- Diamond Bar3
- Dixon3
- Downey3
- Duarte3
- East Los Angeles3
- East Nicolaus3
- East Pasadena3
- East Rancho Dominguez3
- East San Gabriel3
- East Whittier3
- Eastvale3
- El Cajon3
- El Macero3
- El Monte, Contra Costa County3
- El Rio3
- Empire3
- Escondido3
- Esparto3
- Fairbanks Ranch3
- Fallbrook3
- Fillmore3
- Florence-Graham3
- Fontana3
- French Valley3
- Fullerton3
- Galt3
- Garden Grove3
- Gardena3
- Garnet3
- Glendale3
- Glendora3
- Goleta3
- Good Hope3
- Grand Terrace3
- Granite Hills3
- Hacienda Heights3
- Hawaiian Gardens3
- Hawthorne3
- Heber3
- Hidden Hills3
- Hidden Meadows3
- Highgrove3
- Highland3
- Home Gardens3
- Hoopa3
- Huntington Park3
- Imperial Beach3
- Imperial County3
- Inglewood3
- Irwindale3
- Isla Vista3
- Isleton3
- Jurupa Valley3
- Keyes3
- La Cañada Flintridge3
- La Crescenta-Montrose3
- La Habra3
- La Habra Heights3
- La Mesa3
- La Mirada3
- La Palma3
- La Puente3
- La Verne3
- Ladera Heights3
- Lake Elsinore3
- Lake Sherwood3
- Lakeland Village3
- Lakeview3
- Lakewood3
- Lathrop3
- Linda3
- Live Oak CDP3
- Loma Linda3
- Los Alamitos3
- Los Angeles3
- Los Angeles County3
- Los Olivos3
- Lynwood3
- Madison3
- Manteca3
- March ARB3
- Marina del Rey3
- Mayflower Village3
- Maywood3
- Mead Valley3
- Meadowbrook3
- Meiners Oaks3
- Mentone3
- Mesa Verde3
- Mira Monte3
- Mission Canyon3
- Modesto3
- Monrovia3
- Montclair3
- Montebello3
- Monterey Park3
- Monument Hills3
- Moorpark3
- Moreno Valley3
- Murrieta3
- Muscoy3
- National City3
- Nicolaus3
- Niland3
- Norco3
- Nord3
- North El Monte3
- North Tustin3
- Norwalk3
- Nuevo3
- Oak Park3
- Oak View3
- Ojai3
- Olivehurst3
- Ontario3
- Oxnard3
- Palm Desert3
- Palm Springs3
- Paradise Park3
- Paramount3
- Parklawn3
- Pasadena3
- Pasatiempo3
- Penngrove3
- Philo3
- Pico Rivera3
- Piru3
- Placentia3
- Pleasure Point3
- Plumas Lake3
- Pomona3
- Port Hueneme3
- Poway3
- Rainbow3
- Rancho Cucamonga3
- Rancho Mirage3
- Rancho San Diego3
- Rancho Santa Fe3
- Redlands3
- Rialto3
- Ripon3
- Riverdale Park3
- Riverside3
- Robbins3
- Rohnert Park3
- Rosemead3
- Rossmoor3
- Rouse3
- Rowland Heights3
- Salida3
- Salton City3
- San Antonio Heights3
- San Bernardino3
- San Diego3
- San Dimas3
- San Fernando3
- San Gabriel3
- San Marino3
- San Pasqual3
- Santa Barbara County3
- Santa Clarita3
- Santa Cruz3
- Santa Cruz County3
- Santa Fe Springs3
- Santa Monica3
- Santa Rosa Valley3
- Santa Susana3
- Santa Ynez3
- Saticoy3
- Seal Beach3
- Sierra Madre3
- Simi Valley3
- Sky Valley3
- Solvang3
- Somis3
- Sonoma State University3
- South El Monte3
- South Gate3
- South San Gabriel3
- South San Jose Hills3
- South Whittier3
- Stanislaus3
- Stanton3
- Stevenson Ranch3
- Stonyford3
- Sutter County3
- Temecula3
- Temescal Valley3
- Temple City3
- Thousand Oaks3
- Thousand Palms3
- Topanga3
- Twin Lakes, Santa Cruz County3
- University of California-Davis3
- Upland3
- Valinda3
- Valley Center3
- Vernon3
- View Park-Windsor Hills3
- Villa Park3
- Vincent3
- Vista3
- Walnut3
- Walnut Park3
- Warm Springs3
- Weitchpec3
- West Athens3
- West Covina3
- West Hollywood3
- West Modesto3
- West Puente Valley3
- West Rancho Dominguez3
- West Whittier-Los Nietos3
- Westlake Village3
- Westminster3
- Westmont3
- Westmorland3
- Whittier3
- Wildomar3
- Williams3
- Willowbrook3
- Wilton3
- Winter Gardens3
- Woodcrest3
- Woodland3
- Yolo3
- Yolo County3
- Yorba Linda3
- Yuba City3
- Acampo2
- Adelanto2
- Alameda2
- Alameda County2
- Albany2
- Albion2
- Alhambra Valley2
- Aliso Viejo2
- Allensworth2
- Alpaugh2
- Alpine2
- American Canyon2
- Amesti2
- Antelope2
- Apple Valley2
- Aptos Hills-Larkin Valley2
- Arden-Arcade2
- Armona2
- Aromas2
- Arroyo Grande2
- Arvin2
- Ashland2
- Atascadero2
- Atherton2
- Atwater2
- Auberry2
- August2
- Avila Beach2
- Bakersfield2
- Bakersfield Country Club2
- Banning2
- Barstow2
- Bay Point2
- Baywood Park2
- Beale Air Force Base2
- Bear Valley Springs2
- Beaumont2
- Belmont2
- Belvedere2
- Benicia2
- Benton Park2
- Berkeley2
- Biggs2
- Biola2
- Blackhawk2
- Blacklake2
- Bodega2
- Bodega Bay2
- Bonadelle Ranchos2
- Boron2
- Boronda2
- Boyes Hot Springs2
- Bradley2
- Brentwood2
- Brisbane2
- Broadmoor2
- Brooks2
- Buellton2
- Burbank, Santa Clara County2
- Burlingame2
- Buttonwillow2
- Byron2
- California City2
- California Polytechnic State University2
- Callender2
- Cambrian Park2
- Camino Tassajara2
- Camp Pendleton Mainside2
- Camp Pendleton South2
- Campbell2
- Carmel-by-the-Sea2
- Carmel Valley Village2
- Carmichael2
- Caruthers2
- Casa Loma2
- Caspar2
- Castro Valley2
- Castroville2
- Catheys Valley2
- Cayucos2
- Centerville, Fresno County2
- Cherry Valley2
- Cherryland2
- China Lake Acres2
- Chino Hills2
- Chowchilla2
- Citrus Heights2
- Clarksburg2
- Clay2
- Clyde2
- Coarsegold2
- Collierville2
- Colma2
- Colusa2
- Comptche2
- Concord2
- Copperopolis2
- Corcoran2
- Coronado2
- Corralitos2
- Corte Madera2
- Coto de Caza2
- Country Club2
- Courtland2
- Crestline2
- Creston2
- Crockett2
- Cupertino2
- Cutler2
- Cuyama2
- Daly City2
- Dana Point2
- Danville2
- Del Mar2
- Del Monte Forest2
- Del Norte County2
- Del Rey2
- Del Rey Oaks2
- Del Rio2
- Delano2
- Delhi2
- Denair2
- Descanso2
- Desert Center2
- Diablo2
- Dillon Beach2
- Dinuba2
- Discovery Bay2
- Dogtown2
- Dublin2
- Dunnigan2
- Durham2
- Earlimart2
- East Hemet2
- East Oakdale2
- East Palo Alto2
- East Porterville2
- East Richmond Heights2
- Eastern Goleta Valley2
- Edna2
- Edwards Air Force Base2
- El Centro2
- El Cerrito, Contra Costa County2
- El Granada2
- El Sobrante, Contra Costa County2
- El Verano2
- Eldridge2
- Elkhorn2
- Elverta2
- Emerald Lake Hills2
- Emeryville2
- Escalon2
- Exeter2
- Fair Oaks2
- Fairfax, Marin County2
- Fairfield2
- Fairmead2
- Fairview2
- Farmersville2
- Farmington2
- Fetters Hot Springs-Agua Caliente2
- Firebaugh2
- Florin2
- Folsom2
- Foothill Farms2
- Ford City2
- Fort Bragg2
- Fort Irwin2
- Foster City2
- Fowler2
- Franklin, Merced County2
- Franklin, Sacramento County2
- Freedom2
- Fremont2
- French Camp2
- Fruitdale2
- Garden Acres2
- Gasquet2
- Gilroy2
- Glen Ellen2
- Gold River2
- Goshen2
- Granite Bay2
- Grayson2
- Greenacres2
- Grimes2
- Groveland2
- Grover Beach2
- Guadalupe2
- Gustine2
- Half Moon Bay2
- Hanford2
- Harbison Canyon2
- Hardwick2
- Hayward2
- Hemet2
- Herald2
- Hercules2
- Hesperia2
- Highlands2
- Hillsborough2
- Hilmar-Irwin2
- Hiouchi2
- Holtville2
- Home Garden2
- Homestead Valley2
- Hornitos2
- Idlewild2
- Imperial2
- Interlaken2
- Inverness2
- Inyo County2
- Inyokern2
- Ione2
- Ivanhoe2
- Keeler2
- Kennedy2
- Kensington2
- Kentfield2
- Kenwood2
- Kerman2
- Kern2
- Kernville2
- Kings2
- Kingsburg2
- Klamath County2
- La Cresta2
- La Honda2
- La Riviera2
- La Selva Beach2
- Ladera2
- Ladera Ranch2
- Laguna Beach2
- Laguna Hills2
- Laguna Niguel2
- Laguna Woods2
- Lagunitas-Forest Knolls2
- Lake Don Pedro2
- Lake Forest2
- Lake Nacimiento2
- Lake San Marcos2
- Lamont2
- Larkspur2
- Las Flores, Orange County2
- Las Lomas2
- Laton2
- Le Grand2
- Lemon Cove2
- Lemoore Station2
- Lenwood2
- Lexington Hills2
- Lincoln2
- Lincoln Village2
- Linden2
- Lindsay2
- Little River2
- Littlerock2
- Live Oak, Sutter County2
- Livermore2
- Livingston2
- Lockeford2
- Lockwood, Monterey County2
- Lodi2
- Loma Mar2
- Lompoc2
- London2
- Loomis2
- Los Alamos2
- Los Altos2
- Los Altos Hills2
- Los Banos2
- Los Berros2
- Los Gatos2
- Los Osos2
- Lost Hills2
- Loyola2
- Lucas Valley-Marinwood2
- Lucerne Valley2
- Madera2
- Madera Acres2
- Madera County2
- Maricopa2
- Marin City2
- Marin County2
- Marina2
- Martinez2
- Marysville2
- Matheny2
- Mather2
- McClellan Park2
- McFarland2
- McSwain2
- Meadow Vista2
- Mendocino2
- Mendota2
- Menlo Park2
- Merced2
- Merced County2
- Mill Valley2
- Millbrae2
- Milpitas2
- Minkler2
- Mission Hills2
- Mission Viejo2
- Modjeska2
- Montalvin Manor2
- Montara2
- Monte Sereno2
- Monterey2
- Morada2
- Moraga2
- Morgan Hill2
- Morongo Valley2
- Morro Bay2
- Moss Beach2
- Moss Landing2
- Mountain House2
- Mountain View Acres2
- Mountain View, Contra Costa County2
- Mountain View, Santa Clara County2
- Muir Beach2
- Napa County2
- New Cuyama2
- Newark2
- Newman2
- Newport Beach2
- Nicasio2
- Nipomo2
- North Edwards2
- North Fair Oaks2
- North Highlands2
- North Richmond2
- Oak Hills2
- Oakdale2
- Oakland2
- Oakley2
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- Palos Verdes Estates2
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- Paso Robles2
- Patterson Tract2
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- Piedmont2
- Pinole2
- Pismo Beach2
- Pittsburg2
- Pixley2
- Planada2
- Pleasant Hill2
- Pleasanton2
- Point Arena2
- Point Reyes Station2
- Poplar-Cotton Center2
- Porterville2
- Portola Valley2
- Prunedale2
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- Rexland Acres2
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- Rocklin2
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- Rosemont2
- Roseville2
- Ross2
- Sacramento2
- Sacramento County2
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- San Anselmo2
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- San Bruno2
- San Carlos2
- San Clemente2
- San Diego Country Estates2
- San Diego County2
- San Francisco2
- San Joaquin County2
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- San Luis Obispo2
- San Luis Obispo County2
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- San Mateo County2
- San Pablo2
- San Rafael2
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- Santa Clara2
- Santa Clara County2
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- Santa Maria2
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- Solano2
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- South Pasadena2
- South San Francisco2
- South Taft2
- Spreckels2
- Spring Valley Lake2
- Springville2
- Stallion Springs2
- Stanford2
- Stockton2
- Stratford2
- Strathmore2
- Strawberry, Marin County2
- Suisun City2
- Sunnyvale2
- Sunol2
- Sutter2
- Taft2
- Taft Heights2
- Taft Mosswood2
- Tamalpais-Homestead Valley2
- Tara Hills2
- Temelec2
- Templeton2
- Terra Bella2
- Teviston2
- Thornton2
- Three Rivers2
- Tiburon2
- Tipton2
- Tomales2
- Tooleville2
- Torrance2
- Trabuco Canyon2
- Tranquillity2
- Tulare County2
- Turlock2
- Twentynine Palms2
- Union City2
- University of California-Santa Barbara2
- Valle Vista2
- Valley Ford2
- Valley Springs2
- Vandenberg AFB2
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- Ventura2
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- Vineyard2
- Visalia2
- Walnut Grove2
- Wasco2
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- Watsonville2
- Waukena2
- Weedpatch2
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- West Sacramento2
- Wheatland2
- Winton2
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- Woodbridge2
- Woodlake2
- Woodlands2
- Woodside2
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- Anderson1
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- Avenal1
- Avery1
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- Bear Valley, Mariposa County1
- Beckwourth1
- Bella Vista1
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- Benbow1
- Bend1
- Benton1
- Bermuda Dunes1
- Berry Creek1
- Bertsch-Oceanview1
- Bethel Island1
- Bieber1
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- Big Bear Lake1
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- Big River1
- Bishop1
- Black Point-Green Point1
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