Pollen Monitor
Daily pollen insights

Daily pollen overview

Boston pollen count

Latest detail and daily averages and peaks across all 391 captured day(s).

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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/New_York

Total

37

Average

44

Peak

Tree

None

0

Average

0

Peak

Grass

None

0

Average

0

Peak

Ragweed

Moderate

37

Average

44

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

Ragweed37

Complete daily history

Average and peak modeled grains/m³ for all 391 captured days. Scroll sideways on smaller screens.

Complete daily pollen averages and peaks, newest first
DateTotalTreeGrassRagweed
AveragePeakAveragePeakAveragePeakAveragePeak
Tue, Oct 13, 2026Latest374400003744
Mon, Oct 12, 2026395400003954
Sun, Oct 11, 2026435400004354
Sat, Oct 10, 2026497200004972
Fri, Oct 9, 202666107000066107
Thu, Oct 8, 202662110000062110
Wed, Oct 7, 202659119000059119
Tue, Oct 6, 2026509100005091
Mon, Oct 5, 202661141000061141
Sun, Oct 4, 2026496400004964
Sat, Oct 3, 2026466635004361
Fri, Oct 2, 20266713310200057113
Thu, Oct 1, 202635951027002568
Wed, Sep 30, 202638421516002326
Tue, Sep 29, 202624481224001224
Mon, Sep 28, 202652742637002637
Sun, Sep 27, 202657762938002938
Sat, Sep 26, 202673983749003749
Fri, Sep 25, 202656722936002736
Thu, Sep 24, 202668803440003340
Wed, Sep 23, 2026871264463004463
Tue, Sep 22, 2026941364768004768
Mon, Sep 21, 202671843542003542
Sun, Sep 20, 202665823241003241
Sat, Sep 19, 202667823341003341
Fri, Sep 18, 2026811504075004075
Thu, Sep 17, 2026821124156004156
Wed, Sep 16, 2026641243262003262
Tue, Sep 15, 202659823041002941
Mon, Sep 14, 2026701203560003560
Sun, Sep 13, 202660903045003045
Sat, Sep 12, 2026731143757003757
Fri, Sep 11, 2026801244062004062
Thu, Sep 10, 2026121218611090061109
Wed, Sep 9, 2026781263963003963
Tue, Sep 8, 2026791204060004060
Mon, Sep 7, 2026711263663003663
Sun, Sep 6, 202656662833002833
Sat, Sep 5, 202663943247003247
Fri, Sep 4, 2026631023151003151
Thu, Sep 3, 202653682431002837
Wed, Sep 2, 202648782236002642
Tue, Sep 1, 202657782636003042
Mon, Aug 31, 2026671112643583760
Sun, Aug 30, 2026661232647593667
Sat, Aug 29, 2026691052740583757
Fri, Aug 28, 202649621924342734
Thu, Aug 27, 202661942336473351
Wed, Aug 26, 202665942536573551
Tue, Aug 25, 202654852133462946
Mon, Aug 24, 2026521082042482858
Sun, Aug 23, 202628571122241531
Sat, Aug 22, 202630411216231622
Fri, Aug 21, 202632461218231825
Thu, Aug 20, 202634441317231924
Wed, Aug 19, 202630391115231621
Tue, Aug 18, 202625351014121419
Mon, Aug 17, 202634421316231823
Sun, Aug 16, 202638461518332125
Sat, Aug 15, 202633461318231825
Fri, Aug 14, 202633391315231821
Thu, Aug 13, 202629351114221619
Wed, Aug 12, 202626311012221417
Tue, Aug 11, 20262428911121315
Mon, Aug 10, 2026212389111213
Sun, Aug 9, 20262126810121214
Sat, Aug 8, 20262126810121114
Fri, Aug 7, 20262132812121218
Thu, Aug 6, 20262027810121115
Wed, Aug 5, 20262028811121115
Tue, Aug 4, 20261827710121015
Mon, Aug 3, 202616225745810
Sun, Aug 2, 202618234567911
Sat, Aug 1, 2026182523811811
Fri, Jul 31, 2026172912916611
Thu, Jul 30, 20261758001137621
Wed, Jul 29, 2026152000101357
Tue, Jul 28, 2026182500121669
Mon, Jul 27, 20262028001318710
Sun, Jul 26, 2026202300131578
Sat, Jul 25, 2026212600141779
Fri, Jul 24, 20262434001522812
Thu, Jul 23, 20262229001419810
Wed, Jul 22, 2026162500101659
Tue, Jul 21, 2026202300131578
Mon, Jul 20, 20262128001418810
Sun, Jul 19, 20262029001319710
Sat, Jul 18, 20262129001319710
Fri, Jul 17, 20262531001620911
Thu, Jul 16, 20262429001519810
Wed, Jul 15, 20262628001718910
Tue, Jul 14, 2026232600151789
Mon, Jul 13, 20262628001718910
Sun, Jul 12, 202634370022241213
Sat, Jul 11, 20262428001618910
Fri, Jul 10, 20262228001518810
Thu, Jul 9, 20262734001722912
Wed, Jul 8, 20262031001320711
Tue, Jul 7, 20269200037613
Mon, Jul 6, 202614230258914
Sun, Jul 5, 20261842257151022
Sat, Jul 4, 2026329551713391439
Fri, Jul 3, 20263021453414981182
Thu, Jul 2, 2026143338715410
Wed, Jul 1, 202619426111020411
Tue, Jun 30, 20261773522934417
Mon, Jun 29, 2026154441282339
Sun, Jun 28, 202610263751425
Sat, Jun 27, 2026173551081847
Fri, Jun 26, 20262139612101859
Thu, Jun 25, 202621436131120510
Wed, Jun 24, 20261947612923412
Tue, Jun 23, 20261143311621311
Mon, Jun 22, 202620486151022411
Sun, Jun 21, 202630518141527712
Sat, Jun 20, 2026397811201938920
Fri, Jun 19, 202625797221241616
Thu, Jun 18, 2026407811241938920
Wed, Jun 17, 20264383122621381019
Tue, Jun 16, 202648177145523811141
Mon, Jun 15, 202627528151327611
Sun, Jun 14, 20263916211461983933
Sat, Jun 13, 202628838261438619
Fri, Jun 12, 2026251107311256523
Thu, Jun 11, 2026339310241645824
Wed, Jun 10, 202644101122821521022
Tue, Jun 9, 202655103163226471324
Mon, Jun 8, 202649107143324491125
Sun, Jun 7, 202649109173922471023
Sat, Jun 6, 202680159346531651529
Fri, Jun 5, 20265410527511935819
Thu, Jun 4, 20265010628591533716
Wed, Jun 3, 20264611730751230412
Tue, Jun 2, 2026551064179102249
Mon, Jun 1, 202678132621001222411
Sun, May 31, 20265695447591736
Sat, May 30, 202683224651801331413
Fri, May 29, 202688127701001423510
Thu, May 28, 202691260712101433517
Wed, May 27, 202680142631081222512
Tue, May 26, 202685159671211325513
Mon, May 25, 2026871246898142259
Sun, May 24, 2026104192821511733614
Sat, May 23, 20268718969149143459
Fri, May 22, 20261303041032492036719
Thu, May 21, 20261293411022682062714
Wed, May 20, 202681300642451236519
Tue, May 19, 20261366621095751965832
Mon, May 18, 20261434071153412143823
Sun, May 17, 20261674791334232440918
Sat, May 16, 20261433621143142136719
Fri, May 15, 202672209571591133417
Thu, May 14, 20261684171343652449924
Wed, May 13, 202623682219373831721234
Tue, May 12, 202619237715228528601132
Mon, May 11, 202618439014633528651019
Sun, May 10, 202618238614533227511017
Sat, May 9, 20261575431264822355818
Fri, May 8, 20261595231284472350826
Thu, May 7, 202621155117547925501126
Wed, May 6, 20262986232655922647718
Tue, May 5, 20262116751946301335418
Mon, May 4, 202620598919696973618
Sun, May 3, 202618928118227151126
Sat, May 2, 20263072,8773062,8770303
Fri, May 1, 20263111,4793111,4790000
Thu, Apr 30, 20261714601714600000
Wed, Apr 29, 20262003672003670000
Tue, Apr 28, 20262225802225800000
Mon, Apr 27, 20262086102086100000
Sun, Apr 26, 20261744211744210000
Sat, Apr 25, 20261763841763840000
Fri, Apr 24, 20262136242136240000
Thu, Apr 23, 20263401,9413401,9410000
Wed, Apr 22, 20261806021806020000
Tue, Apr 21, 20263412,6123412,6120000
Mon, Apr 20, 20261565801565800000
Sun, Apr 19, 20261624251624250000
Sat, Apr 18, 20262348572348570000
Fri, Apr 17, 20261774141774140000
Thu, Apr 16, 20261965681965680000
Wed, Apr 15, 20261,0052,6751,0052,6750000
Tue, Apr 14, 20261,6816,3981,6816,3980000
Mon, Apr 13, 20267797,8847797,8840000
Sun, Apr 12, 20263109543109540000
Sat, Apr 11, 20264061,8024061,8020000
Fri, Apr 10, 20262829982829980000
Thu, Apr 9, 20262551,2832551,2830000
Wed, Apr 8, 20261104481104480000
Tue, Apr 7, 20261203401203400000
Mon, Apr 6, 20261884631884630000
Sun, Apr 5, 20261414511414510000
Sat, Apr 4, 20263921,0123921,0120000
Fri, Apr 3, 20263452,1613452,1610000
Thu, Apr 2, 20261563241563240000
Wed, Apr 1, 20264932,2424932,2420000
Tue, Mar 31, 20264071,6904071,6900000
Mon, Mar 30, 20262437412437410000
Sun, Mar 29, 20261254561254560000
Sat, Mar 28, 20261182081182080000
Fri, Mar 27, 20263081,0673081,0670000
Thu, Mar 26, 20263581,0983581,0980000
Wed, Mar 25, 20261386161386160000
Tue, Mar 24, 20261032761032760000
Mon, Mar 23, 202685226852260000
Sun, Mar 22, 20261761,0651761,0650000
Sat, Mar 21, 20262271,0512271,0510000
Fri, Mar 20, 20262117872117870000
Thu, Mar 19, 202688153881530000
Wed, Mar 18, 20261317251317250000
Tue, Mar 17, 20262346672346670000
Mon, Mar 16, 20262377092377090000
Sun, Mar 15, 20261183951183950000
Sat, Mar 14, 20263552,5993552,5990000
Fri, Mar 13, 202698282982820000
Thu, Mar 12, 20262931,1922931,1920000
Wed, Mar 11, 20261523651523650000
Tue, Mar 10, 20262637562637560000
Mon, Mar 9, 20261324401324400000
Sun, Mar 8, 20262511,2222511,2220000
Sat, Mar 7, 202699227992270000
Fri, Mar 6, 202693374933740000
Thu, Mar 5, 20261149251149250000
Wed, Mar 4, 20261867121867120000
Tue, Mar 3, 20261471,2621471,2620000
Mon, Mar 2, 20262161,1282161,1280000
Sun, Mar 1, 202666124661240000
Sat, Feb 28, 20262842,4062842,4060000
Fri, Feb 27, 202677190771900000
Thu, Feb 26, 202656203562030000
Wed, Feb 25, 202645153451530000
Tue, Feb 24, 202642104421040000
Mon, Feb 23, 20263421,7943421,7940000
Sun, Feb 22, 20261619411619410000
Sat, Feb 21, 202661174611740000
Fri, Feb 20, 202654105541050000
Thu, Feb 19, 202691527915270000
Wed, Feb 18, 202662250622500000
Tue, Feb 17, 202679330793300000
Mon, Feb 16, 202665579655790000
Sun, Feb 15, 202657337573370000
Sat, Feb 14, 202626146261460000
Fri, Feb 13, 202658106581060000
Thu, Feb 12, 202659228592280000
Wed, Feb 11, 202667767677670000
Tue, Feb 10, 202626121261210000
Mon, Feb 9, 2026176917690000
Sun, Feb 8, 202640414404140000
Sat, Feb 7, 2026239523950000
Fri, Feb 6, 2026155115510000
Thu, Feb 5, 2026217021700000
Wed, Feb 4, 2026336333630000
Tue, Feb 3, 2026228622860000
Mon, Feb 2, 202630296302960000
Sun, Feb 1, 2026175817580000
Sat, Jan 31, 2026112711270000
Fri, Jan 30, 2026183118310000
Thu, Jan 29, 2026248924890000
Wed, Jan 28, 2026122912290000
Tue, Jan 27, 20269249240000
Mon, Jan 26, 202627111271110000
Sun, Jan 25, 20268228220000
Sat, Jan 24, 202636152361520000
Fri, Jan 23, 202666753667530000
Thu, Jan 22, 202634134341340000
Wed, Jan 21, 2026165116510000
Tue, Jan 20, 202643230432300000
Mon, Jan 19, 2026122912290000
Sun, Jan 18, 202644396443960000
Sat, Jan 17, 2026319531950000
Fri, Jan 16, 20262414,2962414,2960000
Thu, Jan 15, 20261428551428550000
Wed, Jan 14, 20261841,6441841,6440000
Tue, Jan 13, 202655447554470000
Mon, Jan 12, 2026163816380000
Sun, Jan 11, 2026388938890000
Sat, Jan 10, 202636102361020000
Fri, Jan 9, 202635120351200000
Thu, Jan 8, 202624122241220000
Wed, Jan 7, 2026178117810000
Tue, Jan 6, 2026102210220000
Mon, Jan 5, 20267197190000
Sun, Jan 4, 202616127161270000
Sat, Jan 3, 20268398390000
Fri, Jan 2, 2026102710270000
Thu, Jan 1, 202646748467480000
Wed, Dec 31, 202516110161100000
Tue, Dec 30, 202520107201070000
Mon, Dec 29, 2025185318530000
Sun, Dec 28, 2025112611260000
Sat, Dec 27, 20257267260000
Fri, Dec 26, 202510114101140000
Thu, Dec 25, 2025167516750000
Wed, Dec 24, 202535693356930000
Tue, Dec 23, 20257157150000
Mon, Dec 22, 2025114111410000
Sun, Dec 21, 2025124012400000
Sat, Dec 20, 20259289280000
Fri, Dec 19, 2025106210620000
Thu, Dec 18, 202517226172260000
Wed, Dec 17, 202554392543920000
Tue, Dec 16, 20258218210000
Mon, Dec 15, 202549490000
Sun, Dec 14, 20257247240000
Sat, Dec 13, 20257137130000
Fri, Dec 12, 20254104100000
Thu, Dec 11, 20255125120000
Wed, Dec 10, 20257157150000
Tue, Dec 9, 20256156150000
Mon, Dec 8, 20255125120000
Sun, Dec 7, 20255125110001
Sat, Dec 6, 20256155110024
Fri, Dec 5, 202553632100215
Thu, Dec 4, 2025612250037
Wed, Dec 3, 20255171400413
Tue, Dec 2, 20256130100612
Mon, Dec 1, 20255110000511
Sun, Nov 30, 20255120000512
Sat, Nov 29, 20255100000510
Fri, Nov 28, 20257140000714
Thu, Nov 27, 20258240000824
Wed, Nov 26, 2025124100001241
Tue, Nov 25, 2025115200001152
Mon, Nov 24, 20257130000713
Sun, Nov 23, 20256130000613
Sat, Nov 22, 20255120000512
Fri, Nov 21, 20258180000818
Thu, Nov 20, 20258170000817
Wed, Nov 19, 20257130000713
Tue, Nov 18, 20258230000823
Mon, Nov 17, 20256120000612
Sun, Nov 16, 20259320000932
Sat, Nov 15, 2025104100001041
Fri, Nov 14, 20259320000932
Thu, Nov 13, 202512122000012122
Wed, Nov 12, 20257200000720
Tue, Nov 11, 20257370000737
Mon, Nov 10, 20256150000615
Sun, Nov 9, 20257200000720
Sat, Nov 8, 2025134600001346
Fri, Nov 7, 20258260000826
Thu, Nov 6, 2025145800001458
Wed, Nov 5, 2025149000001490
Tue, Nov 4, 20259260000926
Mon, Nov 3, 2025101700001017
Sun, Nov 2, 2025132800001328
Sat, Nov 1, 2025174100001741
Fri, Oct 31, 2025193800001938
Thu, Oct 30, 20258190000819
Wed, Oct 29, 20256200000620
Tue, Oct 28, 20257170000717
Mon, Oct 27, 2025206300002063
Sun, Oct 26, 20259240000924
Sat, Oct 25, 202543275000043275
Fri, Oct 24, 2025174700001747
Thu, Oct 23, 2025247000002470
Wed, Oct 22, 2025228100002281
Tue, Oct 21, 2025195800001958
Mon, Oct 20, 2025153600001536
Sun, Oct 19, 2025204600002046
Sat, Oct 18, 2025256700002567
Fri, Oct 17, 2025266400002664
Thu, Oct 16, 2025205700002057
Wed, Oct 15, 2025356000003560
Tue, Oct 14, 2025104200001042
Mon, Oct 13, 2025203600002036
Sun, Oct 12, 202534103000034103
Sat, Oct 11, 2025295000002950
Fri, Oct 10, 2025276000002760
Thu, Oct 9, 2025375600003756
Wed, Oct 8, 2025397400003974
Tue, Oct 7, 202549189000049189
Mon, Oct 6, 202562159000062159
Sun, Oct 5, 202564118000064118
Sat, Oct 4, 202537114000037114
Fri, Oct 3, 2025309700003097
Thu, Oct 2, 2025285200002852
Wed, Oct 1, 2025225500002255
Tue, Sep 30, 202551113000051113
Mon, Sep 29, 202567129000067129
Sun, Sep 28, 202573277000073277
Sat, Sep 27, 2025549300005493
Fri, Sep 26, 202559198000059198
Thu, Sep 25, 202536140000036140
Wed, Sep 24, 2025448100004481
Tue, Sep 23, 202554128000054128
Mon, Sep 22, 2025468800004688
Sun, Sep 21, 2025458500004585
Sat, Sep 20, 202556134000056134
Fri, Sep 19, 202567127000067127
Thu, Sep 18, 202550110000050110