Pollen Monitor
Daily pollen insights

Daily pollen overview

Hayward pollen count

Latest detail and daily averages and peaks across all 390 captured day(s).

← Back to map
Risk levels use category-specific National Allergy Bureau thresholds. Weed is labeled Ragweed because it is the sole weed species in the current multi-region dataset.

Latest daily detail

Tue, Oct 13, 2026. Daily averages and highest observed values.

America/Los_Angeles

Total

50

Average

90

Peak

Tree

None

0

Average

0

Peak

Grass

None

0

Average

0

Peak

Ragweed

High

50

Average

90

Peak

Values are modeled grains/m³. Risk badges use the daily peak for each category.

Species breakdown

Daily average grains/m³ for each reported allergen.

Tree

Ash0
Elm0
Oak0
Pine0
Birch0
Maple0
Mulberry0
Poplar/Cottonwood0
Cypress/Juniper/Cedar0

Grass

Grass0

Ragweed

Ragweed50

Complete daily history

Average and peak modeled grains/m³ for all 390 captured days. Scroll sideways on smaller screens.

Complete daily pollen averages and peaks, newest first
DateTotalTreeGrassRagweed
AveragePeakAveragePeakAveragePeakAveragePeak
Tue, Oct 13, 2026Latest509000005090
Mon, Oct 12, 202650115000050115
Sun, Oct 11, 2026517900005179
Sat, Oct 10, 2026517000005170
Fri, Oct 9, 202658137000058137
Thu, Oct 8, 202656100000056100
Wed, Oct 7, 202659106000059106
Tue, Oct 6, 202668155000068155
Mon, Oct 5, 202686148000086148
Sun, Oct 4, 202680118000080118
Sat, Oct 3, 2026641324100059122
Fri, Oct 2, 2026491247190042105
Thu, Oct 1, 20265816416470042117
Wed, Sep 30, 2026681492657004292
Tue, Sep 29, 2026571642982002982
Mon, Sep 28, 2026551142757002757
Sun, Sep 27, 2026511222661002661
Sat, Sep 26, 2026601283064003064
Fri, Sep 25, 2026661803390003390
Thu, Sep 24, 2026801544077004077
Wed, Sep 23, 2026661303365003365
Tue, Sep 22, 202671983549003549
Mon, Sep 21, 202670823541003541
Sun, Sep 20, 2026751203760003760
Sat, Sep 19, 2026611163158003158
Fri, Sep 18, 2026661243362003362
Thu, Sep 17, 2026841264263004263
Wed, Sep 16, 202662923146003146
Tue, Sep 15, 2026691603580003580
Mon, Sep 14, 2026681643482003482
Sun, Sep 13, 2026731243662003662
Sat, Sep 12, 2026701223561003561
Fri, Sep 11, 2026691363568003568
Thu, Sep 10, 2026921564678004678
Wed, Sep 9, 2026871484474004474
Tue, Sep 8, 2026781683984003984
Mon, Sep 7, 2026741303765003765
Sun, Sep 6, 2026741383769003769
Sat, Sep 5, 2026761443872003872
Fri, Sep 4, 2026721243662003662
Thu, Sep 3, 2026701093250003859
Wed, Sep 2, 2026561132652003161
Tue, Sep 1, 2026661093150003659
Mon, Aug 31, 2026461011839372555
Sun, Aug 30, 2026511082042482758
Sat, Aug 29, 2026481111943382660
Fri, Aug 28, 202658782330463242
Thu, Aug 27, 202660932336473250
Wed, Aug 26, 202663962437573452
Tue, Aug 25, 202651882034362848
Mon, Aug 24, 202654862133463047
Sun, Aug 23, 202634661325251936
Sat, Aug 22, 202634551321241930
Fri, Aug 21, 202634591323241832
Thu, Aug 20, 202640471518332226
Wed, Aug 19, 202634461318231925
Tue, Aug 18, 202634441317231924
Mon, Aug 17, 202636461418232025
Sun, Aug 16, 202635461318231925
Sat, Aug 15, 202635421416231923
Fri, Aug 14, 202637421416332023
Thu, Aug 13, 202635421316231923
Wed, Aug 12, 202628391115231521
Tue, Aug 11, 202625391015231321
Mon, Aug 10, 20262027810121115
Sun, Aug 9, 20262026810121114
Sat, Aug 8, 20262026810121114
Fri, Aug 7, 20262226810121214
Thu, Aug 6, 20262329911121316
Wed, Aug 5, 2026182379111013
Tue, Aug 4, 2026172379111013
Mon, Aug 3, 202620276846913
Sun, Aug 2, 202619274668913
Sat, Aug 1, 2026192523811811
Fri, Jul 31, 20262126121214810
Thu, Jul 30, 2026192500121669
Wed, Jul 29, 2026192300121578
Tue, Jul 28, 2026192300121578
Mon, Jul 27, 2026192300121578
Sun, Jul 26, 2026192300121578
Sat, Jul 25, 2026192600131779
Fri, Jul 24, 20262531001620911
Thu, Jul 23, 2026212600141779
Wed, Jul 22, 20262688001757931
Tue, Jul 21, 20262232001421811
Mon, Jul 20, 2026182500121669
Sun, Jul 19, 2026182600121769
Sat, Jul 18, 2026192600131779
Fri, Jul 17, 20262028001318710
Thu, Jul 16, 2026192600131779
Wed, Jul 15, 202629360019231013
Tue, Jul 14, 20262128001418810
Mon, Jul 13, 202628370018241013
Sun, Jul 12, 202634420022271215
Sat, Jul 11, 20262229001419810
Fri, Jul 10, 20262229001419810
Thu, Jul 9, 20262645001729916
Wed, Jul 8, 20262029001319713
Tue, Jul 7, 202612200046814
Mon, Jul 6, 20261931127111218
Sun, Jul 5, 20262146258191122
Sat, Jul 4, 2026203736816917
Fri, Jul 3, 2026194036919715
Thu, Jul 2, 202625436101220813
Wed, Jul 1, 202620406121020510
Tue, Jun 30, 202623496151123511
Mon, Jun 29, 202625437131221611
Sun, Jun 28, 202622436121121511
Sat, Jun 27, 20262143612102259
Fri, Jun 26, 202627508151323612
Thu, Jun 25, 202624437131222610
Wed, Jun 24, 202625667171232617
Tue, Jun 23, 202624487131224512
Mon, Jun 22, 202626648201332615
Sun, Jun 21, 202631699211532716
Sat, Jun 20, 20264253121620261013
Fri, Jun 19, 2026397011181934918
Thu, Jun 18, 202630558171525713
Wed, Jun 17, 2026346410181733815
Tue, Jun 16, 2026356310191730816
Mon, Jun 15, 202646122133422631025
Sun, Jun 14, 202660164185129801438
Sat, Jun 13, 202662101183130471423
Fri, Jun 12, 202660128173329621433
Thu, Jun 11, 202656202166227931347
Wed, Jun 10, 202659163174229791442
Tue, Jun 9, 2026672161961331111544
Mon, Jun 8, 20265194152925431222
Sun, Jun 7, 202673146254533671634
Sat, Jun 6, 202692205398436841737
Fri, Jun 5, 2026812464012928861331
Thu, Jun 4, 20266812239742034914
Wed, Jun 3, 20265510436691426512
Tue, Jun 2, 202685235621751648716
Mon, Jun 1, 2026113260882001840720
Sun, May 31, 202693219731761531512
Sat, May 30, 2026111238871911731616
Fri, May 29, 2026111145861101724712
Thu, May 28, 20261463041152562241816
Wed, May 27, 20261292071011632138815
Tue, May 26, 20261592921262302553918
Mon, May 25, 20261562811252332439818
Sun, May 24, 20261545591234812351827
Sat, May 23, 20261292351011892033816
Fri, May 22, 20261443051152572141818
Thu, May 21, 20261302591032092036718
Wed, May 20, 2026104364833111645614
Tue, May 19, 2026119388953331847617
Mon, May 18, 202658126469992339
Sun, May 17, 202623380419170831631233
Sat, May 16, 20262701,07621996136751440
Fri, May 15, 202623997919789430601229
Thu, May 14, 20262291,08918799231831122
Wed, May 13, 202630487724977540701535
Tue, May 12, 202624248219741934631122
Mon, May 11, 202624949220242935541222
Sun, May 10, 202632666826960041621633
Sat, May 9, 202625363720756533621326
Fri, May 8, 20263631,1843011,06444781842
Thu, May 7, 202628579224070531571430
Wed, May 6, 20263057282736802539716
Tue, May 5, 20263056902806601935613
Mon, May 4, 20263531,2993401,2711021314
Sun, May 3, 202631271330370761639
Sat, May 2, 20263791,2223781,2221313
Fri, May 1, 20263396813396810000
Thu, Apr 30, 20264251,2364251,2360000
Wed, Apr 29, 20263659703659700000
Tue, Apr 28, 20263741,4493741,4490000
Mon, Apr 27, 20263831,8173831,8170000
Sun, Apr 26, 20264141,7144141,7140000
Sat, Apr 25, 20265562,4805562,4800000
Fri, Apr 24, 20264611,3444611,3440000
Thu, Apr 23, 20264431,6174431,6170000
Wed, Apr 22, 20265622,4095622,4090000
Tue, Apr 21, 20263891,8243891,8240000
Mon, Apr 20, 20264151,3934151,3930000
Sun, Apr 19, 20265761,5035761,5030000
Sat, Apr 18, 20266782,5536782,5530000
Fri, Apr 17, 20263761,6323761,6320000
Thu, Apr 16, 20266232,8776232,8770000
Wed, Apr 15, 20265973,0845973,0840000
Tue, Apr 14, 20266411,9046411,9040000
Mon, Apr 13, 20267776,2287776,2280000
Sun, Apr 12, 20263951,2213951,2210000
Sat, Apr 11, 20266922,3236922,3230000
Fri, Apr 10, 20267172,5437172,5430000
Thu, Apr 9, 20268533,7528533,7520000
Wed, Apr 8, 20268523,6558523,6550000
Tue, Apr 7, 20267423,0107423,0100000
Mon, Apr 6, 20269514,2999514,2990000
Sun, Apr 5, 20267813,7747813,7740000
Sat, Apr 4, 20268693,2158693,2150000
Fri, Apr 3, 20267263,0637263,0630000
Thu, Apr 2, 20267723,6877723,6870000
Wed, Apr 1, 20261,0553,5021,0553,5020000
Tue, Mar 31, 20261,5214,5931,5214,5930000
Mon, Mar 30, 20261,1274,4001,1274,4000000
Sun, Mar 29, 20267292,4817292,4810000
Sat, Mar 28, 20261,0704,1371,0704,1370000
Fri, Mar 27, 20261,0244,4001,0244,4000000
Thu, Mar 26, 20261,0054,7591,0054,7590000
Wed, Mar 25, 20267442,7027442,7020000
Tue, Mar 24, 20264212,2374212,2370000
Mon, Mar 23, 20267513,4467513,4460000
Sun, Mar 22, 20269214,3729214,3720000
Sat, Mar 21, 20261,0414,6271,0414,6270000
Fri, Mar 20, 20267642,6517642,6510000
Thu, Mar 19, 20263478813478810000
Wed, Mar 18, 20266262,4436262,4430000
Tue, Mar 17, 20264343,2324343,2320000
Mon, Mar 16, 20263641,1783641,1780000
Sun, Mar 15, 20263531,3673531,3670000
Sat, Mar 14, 20263691,2463691,2460000
Fri, Mar 13, 20262976862976860000
Thu, Mar 12, 20262796652796650000
Wed, Mar 11, 20262587482587480000
Tue, Mar 10, 20263285493285490000
Mon, Mar 9, 20263191,4163191,4160000
Sun, Mar 8, 20262811,0142811,0140000
Sat, Mar 7, 20262055692055690000
Fri, Mar 6, 20262335732335730000
Thu, Mar 5, 20262947502947500000
Wed, Mar 4, 20262771,7112771,7110000
Tue, Mar 3, 20262601,0612601,0610000
Mon, Mar 2, 20262996072996070000
Sun, Mar 1, 20262946562946560000
Sat, Feb 28, 20262961,0212961,0210000
Fri, Feb 27, 20262368802368800000
Thu, Feb 26, 20265762,9055762,9050000
Wed, Feb 25, 20264131,7854131,7850000
Tue, Feb 24, 20262611,2062611,2060000
Mon, Feb 23, 20261874001874000000
Sun, Feb 22, 20263181,0723181,0720000
Sat, Feb 21, 20262025112025110000
Fri, Feb 20, 20262074252074250000
Thu, Feb 19, 20261684511684510000
Wed, Feb 18, 20261283481283480000
Tue, Feb 17, 20261313761313760000
Mon, Feb 16, 20261733451733450000
Sun, Feb 15, 20261835131835130000
Sat, Feb 14, 20261171991171990000
Fri, Feb 13, 20262246642246640000
Thu, Feb 12, 20261292731292730000
Wed, Feb 11, 20262033982033980000
Tue, Feb 10, 20261042781042780000
Mon, Feb 9, 202693255932550000
Sun, Feb 8, 20261192611192610000
Sat, Feb 7, 202665112651120000
Fri, Feb 6, 20261323101323100000
Thu, Feb 5, 20261051781051780000
Wed, Feb 4, 20261152551152550000
Tue, Feb 3, 202695274952740000
Mon, Feb 2, 20261604861604860000
Sun, Feb 1, 20261152681152680000
Sat, Jan 31, 202699364993640000
Fri, Jan 30, 202665161651610000
Thu, Jan 29, 202666122661220000
Wed, Jan 28, 20261071921071920000
Tue, Jan 27, 202689219892190000
Mon, Jan 26, 2026699669960000
Sun, Jan 25, 20261164991164990000
Sat, Jan 24, 202679396793960000
Fri, Jan 23, 202656127561270000
Thu, Jan 22, 202682223822230000
Wed, Jan 21, 202676136761360000
Tue, Jan 20, 20261523721523720000
Mon, Jan 19, 202662118621180000
Sun, Jan 18, 2026558355830000
Sat, Jan 17, 202669195691950000
Fri, Jan 16, 2026529052900000
Thu, Jan 15, 202685306853060000
Wed, Jan 14, 202692188921880000
Tue, Jan 13, 2026377037700000
Mon, Jan 12, 202676246762460000
Sun, Jan 11, 202678193781930000
Sat, Jan 10, 202648270482700000
Fri, Jan 9, 202666331663310000
Thu, Jan 8, 202665174651740000
Wed, Jan 7, 202657196571960000
Tue, Jan 6, 202662196621960000
Mon, Jan 5, 202643112431120000
Sun, Jan 4, 2026691,218691,2180000
Sat, Jan 3, 202649156491560000
Fri, Jan 2, 2026246724670000
Thu, Jan 1, 202631136311360000
Wed, Dec 31, 2025194119410000
Tue, Dec 30, 20251412,3661412,3660000
Mon, Dec 29, 202567193671930000
Sun, Dec 28, 2025348834880000
Sat, Dec 27, 2025175417540000
Fri, Dec 26, 2025439443940000
Thu, Dec 25, 202546231462310000
Wed, Dec 24, 202552176521760000
Tue, Dec 23, 20251452,6001452,6000000
Mon, Dec 22, 20251346831346830000
Sun, Dec 21, 202529106291060000
Sat, Dec 20, 2025264026400000
Fri, Dec 19, 202531147311470000
Thu, Dec 18, 2025196219620000
Wed, Dec 17, 2025195019500000
Tue, Dec 16, 202540349403490000
Mon, Dec 15, 20257207200000
Sun, Dec 14, 20259259250000
Sat, Dec 13, 20257127120000
Fri, Dec 12, 20258148140000
Thu, Dec 11, 20258208200000
Wed, Dec 10, 20258288280000
Tue, Dec 9, 20256146140000
Mon, Dec 8, 20257397390000
Sun, Dec 7, 20254114100001
Sat, Dec 6, 20255154110014
Fri, Dec 5, 202593552000415
Thu, Dec 4, 20257213900412
Wed, Dec 3, 20251452414001038
Tue, Dec 2, 20255120100511
Mon, Dec 1, 20256110000611
Sun, Nov 30, 20259300000930
Sat, Nov 29, 20255140000514
Fri, Nov 28, 20258430000843
Thu, Nov 27, 2025133000001330
Wed, Nov 26, 202516160000016160
Tue, Nov 25, 2025134300001343
Mon, Nov 24, 20257180000718
Sun, Nov 23, 20256270000627
Sat, Nov 22, 20258410000841
Fri, Nov 21, 20257220000722
Thu, Nov 20, 20258170000817
Wed, Nov 19, 20258270000827
Tue, Nov 18, 20258380000838
Mon, Nov 17, 20257200000720
Sun, Nov 16, 20257190000719
Sat, Nov 15, 20259250000925
Fri, Nov 14, 20258180000818
Thu, Nov 13, 2025183600001836
Wed, Nov 12, 202518106000018106
Tue, Nov 11, 2025145700001457
Mon, Nov 10, 2025102200001022
Sun, Nov 9, 2025101800001018
Sat, Nov 8, 2025122600001226
Fri, Nov 7, 2025143800001438
Thu, Nov 6, 2025122700001227
Wed, Nov 5, 2025223800002238
Tue, Nov 4, 2025209000002090
Mon, Nov 3, 2025144100001441
Sun, Nov 2, 2025133000001330
Sat, Nov 1, 202534263000034263
Fri, Oct 31, 2025217600002176
Thu, Oct 30, 2025235700002357
Wed, Oct 29, 202537123000037123
Tue, Oct 28, 202547224000047224
Mon, Oct 27, 2025225400002254
Sun, Oct 26, 2025257600002576
Sat, Oct 25, 2025224400002244
Fri, Oct 24, 2025254900002549
Thu, Oct 23, 2025244300002443
Wed, Oct 22, 2025266300002663
Tue, Oct 21, 202547237000047237
Mon, Oct 20, 202535106000035106
Sun, Oct 19, 202558215000058215
Sat, Oct 18, 202568181000068181
Fri, Oct 17, 202535168000035168
Thu, Oct 16, 2025267400002674
Wed, Oct 15, 2025224500002245
Tue, Oct 14, 2025174300001743
Mon, Oct 13, 2025328700003287
Sun, Oct 12, 2025469800004698
Sat, Oct 11, 202549102000049102
Fri, Oct 10, 202541168000041168
Thu, Oct 9, 202551130000051130
Wed, Oct 8, 202544146000044146
Tue, Oct 7, 202581260000081260
Mon, Oct 6, 202553137000053137
Sun, Oct 5, 202556243000056243
Sat, Oct 4, 202546129000046129
Fri, Oct 3, 2025306700003067
Thu, Oct 2, 202538120000038120
Wed, Oct 1, 202556153000056153
Tue, Sep 30, 202563179000063179
Mon, Sep 29, 202551132000051132
Sun, Sep 28, 2025357400003574
Sat, Sep 27, 202560186000060186
Fri, Sep 26, 202548161000048161
Thu, Sep 25, 202577203000077203
Wed, Sep 24, 202588177000088177
Tue, Sep 23, 202578182000078182
Mon, Sep 22, 202579322000079322
Sun, Sep 21, 202570265000070265
Sat, Sep 20, 202563264000063264
Fri, Sep 19, 202558198000058198