Pollen count and allergy info for Ontario
Ontario pollen and allergy report • 20:00, Oct 31
Index
Moderate
Tree
Low
Grass
None
Weed
Moderate
17°
5 km/h
83%Daily allergy forecast
Ontario pollen count forecast
Today  21 km/h 20°15° 74% | Sunday  11 km/h22°12 ° 52% | Monday 13 km/h 24°17° 40% |
Air pollutants
Air quality in Ontario today
AQI⁺
Air quality index
55AQI⁺ US
PM2.5
Fine particles (≤ 2.5 µm)
11.5µg/m³
Learn more about pollen in Ontario
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Where is the highest pollen level in California?
- Alpine3
- Apple Valley3
- Bodfish3
- Cloverdale3
- Fulton3
- Harbison Canyon3
- Hesperia3
- Lake Isabella3
- Larkfield-Wikiup3
- Meiners Oaks3
- Mission Canyon3
- Moorpark3
- Ramona3
- San Diego Country Estates3
- San Diego County3
- Wildomar3
- Windsor3
- Adelanto2
- Agoura Hills2
- Aguanga2
- Albion2
- Altadena2
- Aptos2
- Aromas2
- Atascadero2
- Azusa2
- Baker2
- Bakersfield Country Club2
- Banning2
- Bear Valley, Mariposa County2
- Bell Canyon2
- Benton Park2
- Bermuda Dunes2
- Blacklake2
- Bloomington2
- Blythe2
- Bonita2
- Bonsall2
- Boonville2
- Bootjack2
- Borrego Springs2
- Bostonia2
- Boyes Hot Springs2
- Brawley2
- Cabazon2
- Calexico2
- California City2
- Calimesa2
- Calipatria2
- Callender2
- Camarillo2
- Camino2
- Camp Pendleton Mainside2
- Campo2
- Canyon Lake2
- Casa Conejo2
- Casa de Oro-Mount Helix2
- Casa Loma2
- Caspar2
- Castroville2
- Cathedral City2
- Cayucos2
- Challenge-Brownsville2
- Charter Oak2
- Chino2
- Chino Hills2
- Citrus2
- Claremont2
- Clipper Mills2
- Coachella2
- Colton2
- Comptche2
- Corona2
- Coronita2
- Cotati2
- Covelo2
- Covina2
- Crest2
- Crestline2
- Cuyama2
- Day Valley2
- Del Norte County2
- Del Rey Oaks2
- Desert Center2
- Desert Edge2
- Desert Hot Springs2
- Desert Palms2
- Desert Shores2
- Diamond Bar2
- East Hemet2
- East Sonora2
- Eastvale2
- El Cajon2
- El Centro2
- El Verano2
- Eldridge2
- Eucalyptus Hills2
- Fairview2
- Fallbrook2
- Ferndale2
- Fetters Hot Springs-Agua Caliente2
- Fillmore2
- Fontana2
- Fort Bragg2
- Fort Irwin2
- Fortuna2
- French Valley2
- Garnet2
- Gasquet2
- Glendale2
- Glendora2
- Good Hope2
- Grand Terrace2
- Granite Hills2
- Green Acres2
- Guadalupe2
- Hasley Canyon2
- Heber2
- Hemet2
- Hidden Hills2
- Hidden Meadows2
- Highgrove2
- Hiouchi2
- Holtville2
- Home Gardens2
- Homeland2
- Hydesville2
- Imperial2
- Imperial County2
- Indian Wells2
- Indio2
- Inverness2
- Jamul2
- Joshua Tree2
- Jurupa Valley2
- Klamath County2
- La Cañada Flintridge2
- La Crescenta-Montrose2
- La Habra Heights2
- La Honda2
- La Mesa2
- La Presa2
- La Quinta2
- La Verne2
- Lagunitas-Forest Knolls2
- Lake Elsinore2
- Lake Los Angeles2
- Lake Riverside2
- Lake San Marcos2
- Lake Sherwood2
- Lakeland Village2
- Lakeport2
- Lakeside, San Diego County2
- Lakeview2
- Las Lomas2
- Lemon Grove2
- Little River2
- Loma Linda2
- Loma Mar2
- Lompoc2
- Los Alamos2
- Los Osos2
- Lucerne2
- Lucerne Valley2
- Manchester2
- March ARB2
- Marin County2
- Marina2
- Marina del Rey2
- Mariposa2
- Mariposa County2
- McKinleyville2
- Mead Valley2
- Meadowbrook2
- Mecca2
- Mendocino2
- Menifee2
- Mesa Verde2
- Midpines2
- Mira Monte2
- Mission Hills2
- Mono Vista2
- Montclair2
- Moreno Valley2
- Morongo Valley2
- Morro Bay2
- Moss Landing2
- Murrieta2
- Muscoy2
- National City2
- Needles2
- New Cuyama2
- Nicasio2
- Niland2
- Nipomo2
- Norco2
- North Edwards2
- North Shore2
- Nuevo2
- Oak Park2
- Oak View2
- Oasis2
- Ocotillo2
- Ojai2
- Ontario2
- Orcutt2
- Oroville2
- Pajaro2
- Palm Desert2
- Palm Springs2
- Pasadena2
- Penngrove2
- Perris2
- Phoenix Lake2
- Pine Mountain Lake2
- Piru2
- Point Arena2
- Point Reyes Station2
- Pomona2
- Potrero2
- Poway2
- Rainbow2
- Rancho Cucamonga2
- Rancho Mirage2
- Rancho Murieta2
- Rancho San Diego2
- Randsburg2
- Rexland Acres2
- Rialto2
- Rio del Mar2
- Rio Dell2
- Riverside2
- Riverside County2
- Rohnert Park2
- Romoland2
- Rowland Heights2
- Salton City2
- San Antonio Heights2
- San Bernardino2
- San Bernardino County2
- San Dimas2
- San Fernando2
- San Jacinto2
- San Luis Obispo County2
- San Marcos2
- San Mateo County2
- Santa Clarita2
- Santa Margarita2
- Santa Maria2
- Santa Monica2
- Santa Paula2
- Santa Rosa Valley2
- Santa Susana2
- Saticoy2
- Scotia2
- Sea Ranch2
- Seacliff2
- Searles Valley2
- Seaside2
- Seeley2
- Silver Lakes2
- Simi Valley2
- Sisquoc2
- Sky Valley2
- Somis2
- Sonoma2
- Sonoma State University2
- Soquel2
- Soulsbyville2
- South San Jose Hills2
- Spring Valley, San Diego County2
- Stevenson Ranch2
- Temecula2
- Temelec2
- Temescal Valley2
- Thermal2
- Thermalito2
- Thousand Oaks2
- Thousand Palms2
- Tomales2
- Trona2
- Twentynine Palms2
- Upland2
- Val Verde2
- Valinda2
- Valle Vista2
- Vallecito2
- Valley Center2
- Vandenberg AFB2
- Vandenberg Village2
- Ventura2
- Vincent2
- Vista2
- Vista Santa Rosa2
- Walnut2
- Warm Springs2
- Weldon2
- West Covina2
- Westhaven-Moonstone2
- Westlake Village2
- Westmorland2
- Winchester2
- Winter Gardens2
- Woodcrest2
- Woodlands2
- Woodside2
- Yermo2
- Acalanes Ridge1
- Acampo1
- Acton1
- Adin1
- Agua Dulce1
- Ahwahnee1
- Alameda1
- Alameda County1
- Alamo1
- Albany1
- Alhambra1
- Alhambra Valley1
- Aliso Viejo1
- Allendale1
- Allensworth1
- Alondra Park1
- Alpaugh1
- Alpine County1
- Alpine Village1
- Alta1
- Alta Sierra, Kern County1
- Alta Sierra, Nevada County1
- Alturas1
- Alum Rock1
- Amador1
- Amador City1
- Amador Pines1
- American Canyon1
- Amesti1
- Anaheim1
- Anderson1
- Angels1
- Angwin1
- Antelope1
- Antioch1
- Anza1
- Aptos Hills-Larkin Valley1
- Arbuckle1
- Arcadia1
- Arcata1
- Arden-Arcade1
- Armona1
- Arnold1
- Arroyo Grande1
- Artesia1
- Arvin1
- Ashland1
- Atherton1
- Atwater1
- Auberry1
- Auburn1
- Auburn Lake Trails1
- August1
- Avalon1
- Avenal1
- Avery1
- Avila Beach1
- Avocado Heights1
- Bakersfield1
- Baldwin Park1
- Barstow1
- Bass Lake1
- Bay Point1
- Bayview, Humboldt County1
- Baywood Park1
- Beale Air Force Base1
- Bear Valley, Alpine County1
- Bear Valley Springs1
- Beaumont1
- Beckwourth1
- Bell1
- Bell Gardens1
- Bella Vista1
- Bellflower1
- Belmont1
- Belvedere1
- Ben Lomond1
- Benbow1
- Bend1
- Benicia1
- Benton1
- Berkeley1
- Berry Creek1
- Bertsch-Oceanview1
- Bethel Island1
- Beverly Hills1
- Bieber1
- Big Bear City1
- Big Bear Lake1
- Big Pine1
- Big River1
- Biggs1
- Biola1
- Bishop1
- Black Point-Green Point1
- Blackhawk1
- Blue Lake1
- Bodega1
- Bodega Bay1
- Bolinas1
- Bonadelle Ranchos1
- Bonny Doon1
- Boron1
- Boronda1
- Boulder Creek1
- Bradbury1
- Bradley1
- Brea1
- Brentwood1
- Bret Harte1
- Bridgeport1
- Brisbane1
- Broadmoor1
- Brookdale1
- Brooks1
- Brooktrails1
- Buckhorn1
- Bucks Lake1
- Buellton1
- Buena Park1
- Buena Vista1
- Burbank, Los Angeles County1
- Burbank, Santa Clara County1
- Burlingame1
- Burney1
- Burnt Ranch1
- Butte1
- Butte Creek Canyon1
- Butte Meadows1
- Butte Valley1
- Buttonwillow1
- Byron1
- Bystrom1
- Calaveras1
- California Pines1
- California Polytechnic State University1
- Calistoga1
- Calpine1
- Calwa1
- Camanche Village1
- Cambria1
- Cambrian Park1
- Cameron Park1
- Camino Tassajara1
- Camp Nelson1
- Camp Pendleton South1
- Campbell1
- Camptonville1
- Canby1
- Cantua Creek1
- Canyondam1
- Capitola1
- Carlsbad1
- Carmel-by-the-Sea1
- Carmel Valley Village1
- Carmet1
- Carmichael1
- Carnelian Bay1
- Carpinteria1
- Carson1
- Cartago1
- Caruthers1
- Castaic1
- Castle Hill1
- Castro Valley1
- Catheys Valley1
- Cazadero1
- Cedar Flat1
- Cedar Ridge1
- Centerville, Fresno County1
- Centerville, Shasta County1
- Ceres1
- Cerritos1
- Chalfant1
- Channel Islands Beach1
- Cherry Valley1
- Cherryland1
- Chester1
- Chico1
- China Lake Acres1
- Chinese Camp1
- Chowchilla1
- Chualar1
- Chula Vista1
- Citrus Heights1
- Clarksburg1
- Clay1
- Clayton1
- Clearlake1
- Clearlake Oaks1
- Clearlake Riviera1
- Clio1
- Clovis1
- Clyde1
- Coalinga1
- Coarsegold1
- Cobb1
- Coffee Creek1
- Cohasset1
- Cold Springs, El Dorado County1
- Cold Springs, Tuolumne County1
- Colfax1
- Collierville1
- Colma1
- Coloma1
- Columbia1
- Colusa1
- Colusa County1
- Commerce1
- Compton1
- Concord1
- Concow1
- Contra Costa Centre1
- Contra Costa County1
- Copperopolis1
- Corcoran1
- Corning1
- Coronado1
- Corralitos1
- Corte Madera1
- Costa Mesa1
- Coto de Caza1
- Cottonwood, Shasta County1
- Country Club1
- Courtland1
- Cowan1
- Crescent City1
- Creston1
- Crockett1
- Cromberg1
- Crowley Lake1
- Cudahy1
- Culver City1
- Cupertino1
- Cutler1
- Cutten1
- Cypress1
- Daly City1
- Dana Point1
- Danville1
- Davenport1
- Davis1
- Deer Park1
- Del Aire1
- Del Dios1
- Del Mar1
- Del Monte Forest1
- Del Rey1
- Del Rio1
- Delano1
- Delhi1
- Denair1
- Descanso1
- Desert View Highlands1
- Diablo1
- Diamond Springs1
- Dillon Beach1
- Dinuba1
- Discovery Bay1
- Dixon1
- Dixon Lane-MeadowCreek1
- Dobbins1
- Dogtown1
- Dollar Point1
- Dorrington1
- Dorris1
- Dos Palos1
- Downieville1
- Duarte1
- Dublin1
- Dunnigan1
- Dunsmuir1
- Durham1
- Dutch Flat1
- Earlimart1
- East Foothills1
- East Los Angeles1
- East Nicolaus1
- East Oakdale1
- East Palo Alto1
- East Pasadena1
- East Porterville1
- East Quincy1
- East Rancho Dominguez1
- East Richmond Heights1
- East San Gabriel1
- East Shore1
- East Whittier1
- Eastern Goleta Valley1
- Easton1
- Edna1
- Edwards Air Force Base1
- El Cerrito, Contra Costa County1
- El Dorado County1
- El Dorado Hills1
- El Granada1
- El Macero1
- El Monte, Contra Costa County1
- El Portal1
- El Rio1
- El Segundo1
- El Sobrante, Contra Costa County1
- Elk Creek1
- Elk Grove1
- Elkhorn1
- Elmira1
- Elverta1
- Emerald Lake Hills1
- Emeryville1
- Empire1
- Encinitas1
- Escalon1
- Escondido1
- Esparto1
- Etna1
- Eureka1
- Exeter1
- Fair Oaks1
- Fairbanks Ranch1
- Fairfax, Marin County1
- Fairfield1
- Fairmead1
- Farmersville1
- Farmington1
- Felton1
- Fiddletown1
- Fieldbrook1
- Fields Landing1
- Firebaugh1
- Fish Camp1
- Florence-Graham1
- Florin1
- Folsom1
- Foothill Farms1
- Ford City1
- Forest Meadows1
- Forest Ranch1
- Foresta1
- Foresthill1
- Forestville1
- Fort Bidwell1
- Fort Jones1
- Foster City1
- Fountain Valley1
- Fowler1
- Franklin, Merced County1
- Franklin, Sacramento County1
- Frazier Park1
- Freedom1
- Fremont1
- French Camp1
- French Gulch1
- Fresno1
- Fresno County1
- Friant1
- Fruitdale1
- Fruitridge Pocket1
- Fullerton1
- Galt1
- Garberville1
- Garden Acres1
- Garden Grove1
- Gardena1
- Georgetown1
- Gerber1
- Geyserville1
- Gilroy1
- Glen Ellen1
- Glenn1
- Gold Mountain1
- Gold River1
- Golden Hills1
- Goleta1
- Gonzales1
- Goshen1
- Graeagle1
- Granite Bay1
- Grass Valley1
- Graton1
- Grayson1
- Green Valley, Los Angeles County1
- Green Valley, Solano County1
- Greenacres1
- Greenfield, Monterey County1
- Greenview1
- Greenville1
- Grenada1
- Grimes1
- Grizzly Flats1
- Groveland1
- Grover Beach1
- Guerneville1
- Guinda1
- Gustine1
- Hacienda Heights1
- Half Moon Bay1
- Hamilton Branch1
- Hanford1
- Happy Camp1
- Happy Valley1
- Hardwick1
- Hartland1
- Hartley1
- Hathaway Pines1
- Hawaiian Gardens1
- Hawthorne1
- Hayfork1
- Hayward1
- Healdsburg1
- Herald1
- Hercules1
- Hermosa Beach1
- Hidden Valley Lake1
- Highland1
- Highlands1
- Hillsborough1
- Hilmar-Irwin1
- Hollister1
- Home Garden1
- Homestead Valley1
- Hoopa1
- Hopland1
- Hornbrook1
- Hornitos1
- Hughson1
- Humboldt County1
- Humboldt Hill1
- Huntington Beach1
- Huntington Park1
- Huron1
- Idlewild1
- Idyllwild-Pine Cove1
- Igo1
- Imperial Beach1
- Independence1
- Indianola1
- Inglewood1
- Interlaken1
- Inyo County1
- Inyokern1
- Ione1
- Iron Horse1
- Irvine1
- Irwindale1
- Isla Vista1
- Isleton1
- Ivanhoe1
- Jackson1
- Jamestown1
- Janesville1
- Jenner1
- Johnstonville1
- Johnsville1
- Julian1
- June Lake1
- Keeler1
- Kelly Ridge1
- Kelseyville1
- Kennedy1
- Kensington1
- Kentfield1
- Kenwood1
- Kerman1
- Kern1
- Kernville1
- Kettleman City1
- Keyes1
- King City1
- Kings1
- Kings Beach1
- Kingsburg1
- Kirkwood1
- Knightsen1
- La Cresta1
- La Habra1
- La Mirada1
- La Palma1
- La Puente1
- La Riviera1
- La Selva Beach1
- Ladera1
- Ladera Heights1
- Ladera Ranch1
- Lafayette1
- Laguna Beach1
- Laguna Hills1
- Laguna Niguel1
- Laguna Woods1
- Lake Almanor Country Club1
- Lake Almanor West1
- Lake Arrowhead1
- Lake California1
- Lake County1
- Lake Don Pedro1
- Lake Forest1
- Lake Nacimiento1
- Lake of the Pines1
- Lake Shastina1
- Lake Wildwood1
- Lakehead1
- Lakewood1
- Lamont1
- Lancaster1
- Larkspur1
- Las Flores, Orange County1
- Lassen County1
- Lathrop1
- Laton1
- Lawndale1
- Laytonville1
- Le Grand1
- Lebec1
- Lee Vining1
- Leggett1
- Lemon Cove1
- Lemon Hill1
- Lemoore Station1
- Lennox1
- Lenwood1
- Leona Valley1
- Lewiston1
- Lexington Hills1
- Lincoln1
- Lincoln Village1
- Linda1
- Linden1
- Lindsay1
- Little Grass Valley1
- Littlerock1
- Live Oak CDP1
- Live Oak, Sutter County1
- Livermore1
- Livingston1
- Lockeford1
- Lockwood, Amador County1
- Lockwood, Monterey County1
- Lodi1
- Loma Rica1
- Lomita1
- Lompico1
- London1
- Lone Pine1
- Long Barn1
- Long Beach1
- Lookout1
- Loomis1
- Los Alamitos1
- Los Altos1
- Los Altos Hills1
- Los Angeles1
- Los Angeles County1
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- Los Berros1
- Los Gatos1
- Los Molinos1
- Los Olivos1
- Lost Hills1
- Lower Lake1
- Loyalton1
- Loyola1
- Lucas Valley-Marinwood1
- Lynwood1
- Macdoel1
- Madeline1
- Madera1
- Madera Acres1
- Madera County1
- Magalia1
- Malibu1
- Mammoth Lakes1
- Manhattan Beach1
- Manila1
- Manteca1
- Manton1
- Maricopa1
- Marin City1
- Markleeville1
- Martell1
- Martinez1
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- Matheny1
- Mather1
- Maxwell1
- Mayfair1
- Mayflower Village1
- Maywood1
- McArthur1
- McClellan Park1
- McCloud1
- McFarland1
- McSwain1
- Meadow Vista1
- Mendocino County1
- Mendota1
- Menlo Park1
- Mentone1
- Merced1
- Merced County1
- Mesa1
- Mesa Vista1
- Meyers1
- Mi-Wuk Village1
- Middletown1
- Midway City1
- Mill Valley1
- Millbrae1
- Millerton1
- Millville1
- Milpitas1
- Mineral1
- Minkler1
- Mission Viejo1
- Modesto1
- Modjeska1
- Modoc County1
- Mojave1
- Mono1
- Monrovia1
- Montague1
- Montalvin Manor1
- Montara1
- Monte Rio1
- Monte Sereno1
- Montebello1
- Montecito1
- Monterey1
- Monterey County1
- Monterey Park1
- Montgomery Creek1
- Monument Hills1
- Morada1
- Moraga1
- Morgan Hill1
- Mount Hermon1
- Mount Shasta1
- Mountain Gate1
- Mountain House1
- Mountain Ranch1
- Mountain View Acres1
- Mountain View, Contra Costa County1
- Mountain View, Santa Clara County1
- Muir Beach1
- Murphys1
- Myrtletown1
- Napa1
- Napa County1
- Nevada1
- Nevada City1
- Nevada County1
- Newark1
- Newcastle1
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- Newport Beach1
- Nice1
- Nicolaus1
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- Old Station1
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- Orange County1
- Orange Cove1
- Orangevale1
- Orinda1
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- Oroville East1
- Oxnard1
- Pacheco1
- Pacific Grove1
- Pacifica1
- Palermo1
- Palmdale1
- Palo Alto1
- Palo Cedro1
- Palos Verdes Estates1
- Paradise, Paradise County1
- Paradise Park1
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- Parkway1
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- Paso Robles1
- Patterson Tract1
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- Pike1
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- Pine Flat1
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- Rio Vista1
- Ripon1
- River Pines1
- Riverbank1
- Riverdale1
- Riverdale Park1
- Robbins1
- Rocklin1
- Rodeo1
- Rolling Hills Estates1
- Rolling Hills, Los Angeles County1
- Rolling Hills, Madera County1
- Rollingwood1
- Rosamond1
- Rosedale1
- Rosemead1
- Rosemont1
- Roseville1
- Ross1
- Rossmoor1
- Rough and Ready1
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- Rouse1
- Running Springs1
- Rutherford1
- Sacramento1
- Sacramento County1
- Salida1
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- San Carlos1
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- San Gabriel1
- San Joaquin County1
- San Jose1
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- San Juan Capistrano1
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- San Lorenzo1
- San Luis Obispo1
- San Marino1
- San Martin1
- San Mateo1
- San Miguel, Contra Costa County1
- San Miguel, San Luis Obispo County1
- San Pablo1
- San Pasqual1
- San Rafael1
- San Ramon1
- Sanger1
- Santa Ana1
- Santa Barbara1
- Santa Barbara County1
- Santa Clara1
- Santa Clara County1
- Santa Cruz1
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