Pollen Monitor
Daily pollen insights

Daily pollen overview

Portland 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/Los_Angeles

Total

36

Average

47

Peak

Tree

None

0

Average

0

Peak

Grass

None

0

Average

0

Peak

Ragweed

Moderate

36

Average

47

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

Ragweed36

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, 2026Latest364700003647
Mon, Oct 12, 2026385400003854
Sun, Oct 11, 2026447200004472
Sat, Oct 10, 2026414900004149
Fri, Oct 9, 2026457400004574
Thu, Oct 8, 2026445600004456
Wed, Oct 7, 2026457500004575
Tue, Oct 6, 202641117000041117
Mon, Oct 5, 202658123000058123
Sun, Oct 4, 2026569900005699
Sat, Oct 3, 20265010738004799
Fri, Oct 2, 20265286813004473
Thu, Oct 1, 2026441121232003280
Wed, Sep 30, 202649841932003052
Tue, Sep 29, 202641782139002139
Mon, Sep 28, 202656822941002741
Sun, Sep 27, 202654762838002638
Sat, Sep 26, 202647622431002331
Fri, Sep 25, 202656862843002843
Thu, Sep 24, 202662783139003139
Wed, Sep 23, 202659763038003038
Tue, Sep 22, 202665743337003337
Mon, Sep 21, 202667843442003442
Sun, Sep 20, 202666743337003337
Sat, Sep 19, 202652702635002635
Fri, Sep 18, 202681358401790040179
Thu, Sep 17, 2026841204260004260
Wed, Sep 16, 2026541162758002758
Tue, Sep 15, 202650582529002529
Mon, Sep 14, 202650622531002531
Sun, Sep 13, 202660623031003031
Sat, Sep 12, 202657722936002936
Fri, Sep 11, 202657942947002947
Thu, Sep 10, 2026751163858003858
Wed, Sep 9, 202678883944003944
Tue, Sep 8, 202660823041003041
Mon, Sep 7, 202658762938002938
Sun, Sep 6, 202659782939002939
Sat, Sep 5, 202655742837002837
Fri, Sep 4, 202656582829002829
Thu, Sep 3, 202653572426002931
Wed, Sep 2, 202638631729002134
Tue, Sep 1, 202661892841003348
Mon, Aug 31, 2026541092142483059
Sun, Aug 30, 202653722028452939
Sat, Aug 29, 202653812031462944
Fri, Aug 28, 202654652125453035
Thu, Aug 27, 202653622124442934
Wed, Aug 26, 202654672126452936
Tue, Aug 25, 202645561722342430
Mon, Aug 24, 202644561722342430
Sun, Aug 23, 202637561422342030
Sat, Aug 22, 202632441217231824
Fri, Aug 21, 202646931836372550
Thu, Aug 20, 202636441417232024
Wed, Aug 19, 202632441217231724
Tue, Aug 18, 202633421316231823
Mon, Aug 17, 202632441217231824
Sun, Aug 16, 202635441317231924
Sat, Aug 15, 202631411216231722
Fri, Aug 14, 202630331213221718
Thu, Aug 13, 202631411216231722
Wed, Aug 12, 202626311012221417
Tue, Aug 11, 20262328911221315
Mon, Aug 10, 20262027810121115
Sun, Aug 9, 20262333913121318
Sat, Aug 8, 20262129811121216
Fri, Aug 7, 2026212389111213
Thu, Aug 6, 20262126810121214
Wed, Aug 5, 20261926810121114
Tue, Aug 4, 2026182279111012
Mon, Aug 3, 202617235745811
Sun, Aug 2, 202618224567810
Sat, Aug 1, 2026212333910910
Fri, Jul 31, 20262126121214810
Thu, Jul 30, 2026192300121578
Wed, Jul 29, 2026192500121679
Tue, Jul 28, 2026192300121578
Mon, Jul 27, 2026182500121679
Sun, Jul 26, 2026202000131377
Sat, Jul 25, 2026192600121779
Fri, Jul 24, 20262232001421811
Thu, Jul 23, 20262289001457832
Wed, Jul 22, 2026202500131679
Tue, Jul 21, 20262139001425814
Mon, Jul 20, 20262129001419710
Sun, Jul 19, 20261929001319710
Sat, Jul 18, 2026192300121578
Fri, Jul 17, 2026202500131679
Thu, Jul 16, 20262028001318710
Wed, Jul 15, 202628360018231013
Tue, Jul 14, 20262231001420811
Mon, Jul 13, 202627400018261014
Sun, Jul 12, 202636820023531329
Sat, Jul 11, 20262328001518810
Fri, Jul 10, 20262540001626914
Thu, Jul 9, 202628420018271015
Wed, Jul 8, 20262440001526914
Tue, Jul 7, 20261633015111121
Mon, Jul 6, 20261936136111122
Sun, Jul 5, 20262348269191226
Sat, Jul 4, 20262239379171017
Fri, Jul 3, 2026203647916713
Thu, Jul 2, 202621525121024716
Wed, Jul 1, 202619305991447
Tue, Jun 30, 202619285991347
Mon, Jun 29, 2026163541081847
Sun, Jun 28, 2026193651191749
Sat, Jun 27, 2026211046321048524
Fri, Jun 26, 20261954617925412
Thu, Jun 25, 20263710311291853821
Wed, Jun 24, 202632749211638715
Tue, Jun 23, 202632499151523712
Mon, Jun 22, 202628558151427614
Sun, Jun 21, 2026347810241636818
Sat, Jun 20, 2026395811171930914
Fri, Jun 19, 2026398611231942922
Thu, Jun 18, 20264282122321421020
Wed, Jun 17, 2026387711241835918
Tue, Jun 16, 202631849241543717
Mon, Jun 15, 202623397111119510
Sun, Jun 14, 202633719221633816
Sat, Jun 13, 20264684132622401021
Fri, Jun 12, 2026398211251938919
Thu, Jun 11, 20264686132222421122
Wed, Jun 10, 2026356910211732816
Tue, Jun 9, 20263810911341850925
Mon, Jun 8, 2026405111162026913
Sun, Jun 7, 202664127224629561425
Sat, Jun 6, 202615826767110621092852
Fri, Jun 5, 202665114325523381021
Thu, Jun 4, 20266612238651938919
Wed, Jun 3, 20265413835911435512
Tue, Jun 2, 202646101347591749
Mon, Jun 1, 202692162721251527512
Sun, May 31, 20265784456791536
Sat, May 30, 2026741065885121647
Fri, May 29, 20268113164106132248
Thu, May 28, 202687160681221425513
Wed, May 27, 2026102475824191540516
Tue, May 26, 202668143541101122411
Mon, May 25, 202665184521421028414
Sun, May 24, 20268115864124132948
Sat, May 23, 202688272702201334518
Fri, May 22, 2026114249912001842614
Thu, May 21, 20261272241001881937716
Wed, May 20, 202688228681761435517
Tue, May 19, 2026122399973481843715
Mon, May 18, 2026112278892331739615
Sun, May 17, 20261572941252522439820
Sat, May 16, 202619958716050629581031
Fri, May 15, 2026106231841941628615
Thu, May 14, 20261313031032342146823
Wed, May 13, 20261533651213032349926
Tue, May 12, 20261402721102272249818
Mon, May 11, 20261815061464422655915
Sun, May 10, 20261653751323122554927
Sat, May 9, 20261432941132272245822
Fri, May 8, 202620765216857829671128
Thu, May 7, 202621562517954725511127
Wed, May 6, 20263398513068142747619
Tue, May 5, 20261392441252181118413
Mon, May 4, 202615929015228061627
Sun, May 3, 2026230699223679514210
Sat, May 2, 20262111,4902101,4900404
Fri, May 1, 20262344572344570000
Thu, Apr 30, 20262551,0462551,0460000
Wed, Apr 29, 20262311,1742311,1740000
Tue, Apr 28, 20262646442646440000
Mon, Apr 27, 20261853211853210000
Sun, Apr 26, 20264164,2964164,2960000
Sat, Apr 25, 20263118953118950000
Fri, Apr 24, 20262737162737160000
Thu, Apr 23, 20261925291925290000
Wed, Apr 22, 20262798442798440000
Tue, Apr 21, 20263868543868540000
Mon, Apr 20, 20264921,4904921,4900000
Sun, Apr 19, 20264071,3294071,3290000
Sat, Apr 18, 20264992,5244992,5240000
Fri, Apr 17, 20264041,2224041,2220000
Thu, Apr 16, 20262372,0692372,0690000
Wed, Apr 15, 20263049593049590000
Tue, Apr 14, 20262765572765570000
Mon, Apr 13, 20263501,0163501,0160000
Sun, Apr 12, 20263242,3443242,3440000
Sat, Apr 11, 20264352,6214352,6210000
Fri, Apr 10, 20264552,1354552,1350000
Thu, Apr 9, 20265182,7485182,7480000
Wed, Apr 8, 20263166613166610000
Tue, Apr 7, 20266143,3586143,3580000
Mon, Apr 6, 20268212,1968212,1960000
Sun, Apr 5, 20268354,7668354,7660000
Sat, Apr 4, 20264181,2044181,2040000
Fri, Apr 3, 20262291,0332291,0330000
Thu, Apr 2, 20263761,8373761,8370000
Wed, Apr 1, 20262215742215740000
Tue, Mar 31, 20261995181995180000
Mon, Mar 30, 20262771,0452771,0450000
Sun, Mar 29, 20263931,6223931,6220000
Sat, Mar 28, 20264181,6814181,6810000
Fri, Mar 27, 20263731,8973731,8970000
Thu, Mar 26, 20262428382428380000
Wed, Mar 25, 20262645412645410000
Tue, Mar 24, 20263035413035410000
Mon, Mar 23, 20263141,4673141,4670000
Sun, Mar 22, 20262698702698700000
Sat, Mar 21, 20263068483068480000
Fri, Mar 20, 20265062,0985062,0980000
Thu, Mar 19, 20265153,0515153,0510000
Wed, Mar 18, 20266944,7106944,7100000
Tue, Mar 17, 20263101,7153101,7150000
Mon, Mar 16, 20262475612475610000
Sun, Mar 15, 20262101,2942101,2940000
Sat, Mar 14, 20262114622114620000
Fri, Mar 13, 20262696192696190000
Thu, Mar 12, 20261864481864480000
Wed, Mar 11, 20261638381638380000
Tue, Mar 10, 20261332721332720000
Mon, Mar 9, 20261686561686560000
Sun, Mar 8, 20262708112708110000
Sat, Mar 7, 20261742801742800000
Fri, Mar 6, 20261543511543510000
Thu, Mar 5, 20261693791693790000
Wed, Mar 4, 20261765411765410000
Tue, Mar 3, 20262028032028030000
Mon, Mar 2, 20262116422116420000
Sun, Mar 1, 20261837901837900000
Sat, Feb 28, 20262911,4342911,4340000
Fri, Feb 27, 20262089992089990000
Thu, Feb 26, 202690213902130000
Wed, Feb 25, 20261092571092570000
Tue, Feb 24, 20261092491092490000
Mon, Feb 23, 20261523271523270000
Sun, Feb 22, 20261393231393230000
Sat, Feb 21, 20261094561094560000
Fri, Feb 20, 202676198761980000
Thu, Feb 19, 20261072891072890000
Wed, Feb 18, 202676243762430000
Tue, Feb 17, 20261316281316280000
Mon, Feb 16, 20261465551465550000
Sun, Feb 15, 202676249762490000
Sat, Feb 14, 202659112591120000
Fri, Feb 13, 20261524261524260000
Thu, Feb 12, 202698177981770000
Wed, Feb 11, 202698211982110000
Tue, Feb 10, 20261547431547430000
Mon, Feb 9, 202698374983740000
Sun, Feb 8, 20261012081012080000
Sat, Feb 7, 2026628962890000
Fri, Feb 6, 202690146901460000
Thu, Feb 5, 202698243982430000
Wed, Feb 4, 20261291751291750000
Tue, Feb 3, 202679110791100000
Mon, Feb 2, 20261122331122330000
Sun, Feb 1, 20261011751011750000
Sat, Jan 31, 20261024101024100000
Fri, Jan 30, 202644126441260000
Thu, Jan 29, 202668149681490000
Wed, Jan 28, 202643141431410000
Tue, Jan 27, 202669473694730000
Mon, Jan 26, 2026287128710000
Sun, Jan 25, 202661414614140000
Sat, Jan 24, 202640294402940000
Fri, Jan 23, 202629102291020000
Thu, Jan 22, 2026184418440000
Wed, Jan 21, 2026239123910000
Tue, Jan 20, 202640160401600000
Mon, Jan 19, 2026276827680000
Sun, Jan 18, 20261806371806370000
Sat, Jan 17, 20261158151158150000
Fri, Jan 16, 202681396813960000
Thu, Jan 15, 202639112391120000
Wed, Jan 14, 202661141611410000
Tue, Jan 13, 202640146401460000
Mon, Jan 12, 202696820968200000
Sun, Jan 11, 202655118551180000
Sat, Jan 10, 2026379037900000
Fri, Jan 9, 2026429042900000
Thu, Jan 8, 2026154115410000
Wed, Jan 7, 202645272452720000
Tue, Jan 6, 202625136251360000
Mon, Jan 5, 202630100301000000
Sun, Jan 4, 202630103301030000
Sat, Jan 3, 2026369436940000
Fri, Jan 2, 2026123512350000
Thu, Jan 1, 2026173517350000
Wed, Dec 31, 2025146014600000
Tue, Dec 30, 2025146714670000
Mon, Dec 29, 2025218421840000
Sun, Dec 28, 2025164316430000
Sat, Dec 27, 2025276127610000
Fri, Dec 26, 2025244424440000
Thu, Dec 25, 2025204920490000
Wed, Dec 24, 2025194819480000
Tue, Dec 23, 20259319310000
Mon, Dec 22, 202515228152280000
Sun, Dec 21, 2025113711370000
Sat, Dec 20, 202517106171060000
Fri, Dec 19, 202525265252650000
Thu, Dec 18, 202517231172310000
Wed, Dec 17, 2025126412640000
Tue, Dec 16, 2025207820780000
Mon, Dec 15, 20258338330000
Sun, Dec 14, 20257427420000
Sat, Dec 13, 20253103100000
Fri, Dec 12, 20256146140000
Thu, Dec 11, 2025123312330000
Wed, Dec 10, 20258258250000
Tue, Dec 9, 20258168160000
Mon, Dec 8, 20256206200000
Sun, Dec 7, 20256105100001
Sat, Dec 6, 20258196140025
Fri, Dec 5, 202562841600312
Thu, Dec 4, 20257213900412
Wed, Dec 3, 202539120037
Tue, Dec 2, 20255320400528
Mon, Dec 1, 20256150000615
Sun, Nov 30, 20258320000832
Sat, Nov 29, 20255130000513
Fri, Nov 28, 20255150000515
Thu, Nov 27, 20256190000619
Wed, Nov 26, 2025156000001560
Tue, Nov 25, 2025155000001550
Mon, Nov 24, 20255110000511
Sun, Nov 23, 20254120000412
Sat, Nov 22, 20256250000625
Fri, Nov 21, 20256340000634
Thu, Nov 20, 20257180000718
Wed, Nov 19, 20257220000722
Tue, Nov 18, 2025103900001039
Mon, Nov 17, 20256260000626
Sun, Nov 16, 20254110000411
Sat, Nov 15, 2025106400001064
Fri, Nov 14, 20256180000618
Thu, Nov 13, 2025116600001166
Wed, Nov 12, 20256130000613
Tue, Nov 11, 20257210000721
Mon, Nov 10, 20257380000738
Sun, Nov 9, 2025102600001026
Sat, Nov 8, 2025118700001187
Fri, Nov 7, 2025102000001020
Thu, Nov 6, 20258220000822
Wed, Nov 5, 2025102300001023
Tue, Nov 4, 20257220000722
Mon, Nov 3, 20258240000824
Sun, Nov 2, 20257170000717
Sat, Nov 1, 202523227000023227
Fri, Oct 31, 2025132800001328
Thu, Oct 30, 2025123500001235
Wed, Oct 29, 20256130000613
Tue, Oct 28, 20258240000824
Mon, Oct 27, 2025183800001838
Sun, Oct 26, 20257190000719
Sat, Oct 25, 20257200000720
Fri, Oct 24, 2025185100001851
Thu, Oct 23, 2025174000001740
Wed, Oct 22, 2025155100001551
Tue, Oct 21, 2025113500001135
Mon, Oct 20, 2025123100001231
Sun, Oct 19, 2025225400002254
Sat, Oct 18, 2025308200003082
Fri, Oct 17, 2025258600002586
Thu, Oct 16, 2025255600002556
Wed, Oct 15, 2025298900002989
Tue, Oct 14, 202524163000024163
Mon, Oct 13, 2025255300002553
Sun, Oct 12, 202534113000034113
Sat, Oct 11, 2025213400002134
Fri, Oct 10, 2025164600001646
Thu, Oct 9, 2025345700003457
Wed, Oct 8, 2025289200002892
Tue, Oct 7, 2025418600004186
Mon, Oct 6, 202538197000038197
Sun, Oct 5, 2025254600002546
Sat, Oct 4, 2025276800002768
Fri, Oct 3, 2025103900001039
Thu, Oct 2, 2025218700002187
Wed, Oct 1, 2025122600001226
Tue, Sep 30, 202529106000029106
Mon, Sep 29, 2025289100002891
Sun, Sep 28, 202542143000042143
Sat, Sep 27, 202534102000034102
Fri, Sep 26, 202541156000041156
Thu, Sep 25, 202552111000052111
Wed, Sep 24, 202548146000048146
Tue, Sep 23, 202557156000057156
Mon, Sep 22, 202543183000043183
Sun, Sep 21, 202544174000044174
Sat, Sep 20, 2025469400004694
Fri, Sep 19, 202554131000054131
Thu, Sep 18, 202551137000051137