Pollen Monitor
Daily pollen insights

Daily pollen overview

Chicago 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/Chicago

Total

83

Average

91

Peak

Tree

None

0

Average

0

Peak

Grass

None

0

Average

0

Peak

Ragweed

High

83

Average

91

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

Ragweed83

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, 2026Latest839100008391
Mon, Oct 12, 2026569800005698
Sun, Oct 11, 202667115000067115
Sat, Oct 10, 202664119000064119
Fri, Oct 9, 2026549800005498
Thu, Oct 8, 202650147000050147
Wed, Oct 7, 2026649900006499
Tue, Oct 6, 202667174000067174
Mon, Oct 5, 2026558000005580
Sun, Oct 4, 202662111000062111
Sat, Oct 3, 2026577045005365
Fri, Oct 2, 20266091914005177
Thu, Oct 1, 20263068819002249
Wed, Sep 30, 202649701927003043
Tue, Sep 29, 2026491582579002579
Mon, Sep 28, 202649722536002536
Sun, Sep 27, 2026601123056003056
Sat, Sep 26, 202653702635002635
Fri, Sep 25, 202652602630002630
Thu, Sep 24, 202671903545003545
Wed, Sep 23, 20261151465873005873
Tue, Sep 22, 20261481807490007490
Mon, Sep 21, 20261091305565005565
Sun, Sep 20, 2026661103355003355
Sat, Sep 19, 2026771223861003861
Fri, Sep 18, 2026871144357004357
Thu, Sep 17, 2026671283464003464
Wed, Sep 16, 2026721183659003659
Tue, Sep 15, 2026901204560004560
Mon, Sep 14, 2026641183259003259
Sun, Sep 13, 2026711023651003651
Sat, Sep 12, 2026801344067004067
Fri, Sep 11, 2026811484174004174
Thu, Sep 10, 202667943347003347
Wed, Sep 9, 2026851584279004279
Tue, Sep 8, 2026911264563004563
Mon, Sep 7, 20261041565278005278
Sun, Sep 6, 20261031525276005276
Sat, Sep 5, 2026711363668003668
Fri, Sep 4, 2026771203960003960
Thu, Sep 3, 2026721133352003961
Wed, Sep 2, 2026751203555004165
Tue, Sep 1, 2026711093350003859
Mon, Aug 31, 202661942436473351
Sun, Aug 30, 202668912635573749
Sat, Aug 29, 202656962237473052
Fri, Aug 28, 202663982438473453
Thu, Aug 27, 202657832232463145
Wed, Aug 26, 202664792530563543
Tue, Aug 25, 202654912135473049
Mon, Aug 24, 202648831932362645
Sun, Aug 23, 202648781930362642
Sat, Aug 22, 202637571422242031
Fri, Aug 21, 202636601423242033
Thu, Aug 20, 202644521720342428
Wed, Aug 19, 202626361014221420
Tue, Aug 18, 202631441217231724
Mon, Aug 17, 202634441317231924
Sun, Aug 16, 20262444917131324
Sat, Aug 15, 202625461018131425
Fri, Aug 14, 20262127810121215
Thu, Aug 13, 20262229911121216
Wed, Aug 12, 2026202389111113
Tue, Aug 11, 2026163961513921
Mon, Aug 10, 20261731712121017
Sun, Aug 9, 20261829711121016
Sat, Aug 8, 20261926710121014
Fri, Aug 7, 202615236901813
Thu, Aug 6, 202614216811812
Wed, Aug 5, 20261827710121015
Tue, Aug 4, 2026162861112915
Mon, Aug 3, 202617265846812
Sun, Aug 2, 202617264658812
Sat, Aug 1, 2026192834812812
Fri, Jul 31, 20262128121115811
Thu, Jul 30, 2026182600121769
Wed, Jul 29, 2026212600141789
Tue, Jul 28, 2026172500111669
Mon, Jul 27, 20261831001120611
Sun, Jul 26, 20261931001220711
Sat, Jul 25, 2026212300141578
Fri, Jul 24, 20262731001720911
Thu, Jul 23, 2026222600141789
Wed, Jul 22, 20262531001620911
Tue, Jul 21, 2026202600131779
Mon, Jul 20, 20262231001420811
Sun, Jul 19, 2026232600151789
Sat, Jul 18, 20262439001625814
Fri, Jul 17, 20262237001424813
Thu, Jul 16, 20262687001756931
Wed, Jul 15, 202630810020521129
Tue, Jul 14, 20262131001420811
Mon, Jul 13, 20262428001618810
Sun, Jul 12, 202632450021291116
Sat, Jul 11, 20262354001535819
Fri, Jul 10, 20261928001218710
Thu, Jul 9, 20262532001721911
Wed, Jul 8, 20262332001521811
Tue, Jul 7, 20261642015141128
Mon, Jul 6, 202612200147813
Sun, Jul 5, 2026154415616823
Sat, Jul 4, 2026214136918918
Fri, Jul 3, 20262172415931826
Thu, Jul 2, 202623695161132721
Wed, Jul 1, 2026173651181748
Tue, Jun 30, 202618365991849
Mon, Jun 29, 202617275781347
Sun, Jun 28, 202613314961636
Sat, Jun 27, 2026173951281849
Fri, Jun 26, 2026194151391949
Thu, Jun 25, 20261944514920410
Wed, Jun 24, 202627828211340621
Tue, Jun 23, 202630508141425713
Mon, Jun 22, 20261761519828414
Sun, Jun 21, 202623857261139520
Sat, Jun 20, 202630498151523711
Fri, Jun 19, 2026345910181727814
Thu, Jun 18, 202629708221432716
Wed, Jun 17, 20264293122421451024
Tue, Jun 16, 202643104123221481024
Mon, Jun 15, 202627698211332616
Sun, Jun 14, 2026183151091548
Sat, Jun 13, 202627618191329615
Fri, Jun 12, 202624567171226613
Thu, Jun 11, 202626487151322611
Wed, Jun 10, 2026183451091648
Tue, Jun 9, 202630599161529715
Mon, Jun 8, 20264688132722411020
Sun, Jun 7, 2026418614311838917
Sat, Jun 6, 202657115244723471021
Fri, Jun 5, 202670145357224481125
Thu, Jun 4, 20266411537701835818
Wed, Jun 3, 20265311235741428510
Tue, Jun 2, 20266810650761319511
Mon, Jun 1, 2026107175831351726714
Sun, May 31, 2026671095388101547
Sat, May 30, 2026751115988122059
Fri, May 29, 20268313165991321511
Thu, May 28, 202671955675111747
Wed, May 27, 202676127601001220410
Tue, May 26, 20265384426481437
Mon, May 25, 202675129591021223410
Sun, May 24, 20268712968981422511
Sat, May 23, 2026921257297142059
Fri, May 22, 2026107244841851739620
Thu, May 21, 20261352741072222037718
Wed, May 20, 2026102317812681642519
Tue, May 19, 20267213756108112549
Mon, May 18, 2026101204791551632617
Sun, May 17, 202699177781371627613
Sat, May 16, 2026123185961531928713
Fri, May 15, 2026104221821851638610
Thu, May 14, 20261987391606612882920
Wed, May 13, 202625499820991233781239
Tue, May 12, 20261603021272402549825
Mon, May 11, 20262901,5122391,39637991447
Sun, May 10, 20262211,6101831,46827931149
Sat, May 9, 20261544251223582351923
Fri, May 8, 202619747815842228521126
Thu, May 7, 2026119241972061525613
Wed, May 6, 20261272851112651328311
Tue, May 5, 20261965451785181427410
Mon, May 4, 2026191456183428614214
Sun, May 3, 202619767619167041526
Sat, May 2, 20261062381062380101
Fri, May 1, 20261663421663420000
Thu, Apr 30, 20261653871653870000
Wed, Apr 29, 20261492711492710000
Tue, Apr 28, 20262607582607580000
Mon, Apr 27, 20262306242306240000
Sun, Apr 26, 20261983731983730000
Sat, Apr 25, 20262688342688340000
Fri, Apr 24, 20264181,8244181,8240000
Thu, Apr 23, 20263591,5373591,5370000
Wed, Apr 22, 20265392,9035392,9030000
Tue, Apr 21, 20263972,1523972,1520000
Mon, Apr 20, 20261342861342860000
Sun, Apr 19, 20261891,0191891,0190000
Sat, Apr 18, 20264581,9634581,9630000
Fri, Apr 17, 20262619132619130000
Thu, Apr 16, 20264151,0144151,0140000
Wed, Apr 15, 20261,4395,2141,4395,2140000
Tue, Apr 14, 20261,4516,1791,4516,1790000
Mon, Apr 13, 20261,6878,9901,6878,9900000
Sun, Apr 12, 20269465,5829465,5820000
Sat, Apr 11, 20262006042006040000
Fri, Apr 10, 20264875,0704875,0700000
Thu, Apr 9, 20264471,3144471,3140000
Wed, Apr 8, 20262521,3782521,3780000
Tue, Apr 7, 202695176951760000
Mon, Apr 6, 20262404582404580000
Sun, Apr 5, 20261675601675600000
Sat, Apr 4, 20261653651653650000
Fri, Apr 3, 20264352,4664352,4660000
Thu, Apr 2, 20263983,3813983,3810000
Wed, Apr 1, 202694197941970000
Tue, Mar 31, 20267243,1247243,1240000
Mon, Mar 30, 20267274,4477274,4470000
Sun, Mar 29, 20264121,6874121,6870000
Sat, Mar 28, 20261253611253610000
Fri, Mar 27, 20261301,2981301,2980000
Thu, Mar 26, 20265982,3495982,3490000
Wed, Mar 25, 20263552,0953552,0950000
Tue, Mar 24, 20261194931194930000
Mon, Mar 23, 20261304581304580000
Sun, Mar 22, 20269654,0209654,0200000
Sat, Mar 21, 20263521,7923521,7920000
Fri, Mar 20, 20265102,3875102,3870000
Thu, Mar 19, 20262651,2432651,2430000
Wed, Mar 18, 20261165261165260000
Tue, Mar 17, 20261203121203120000
Mon, Mar 16, 20261446241446240000
Sun, Mar 15, 20261643871643870000
Sat, Mar 14, 20261226641226640000
Fri, Mar 13, 20264462,0554462,0550000
Thu, Mar 12, 20262152,6242152,6240000
Wed, Mar 11, 20261003081003080000
Tue, Mar 10, 20263339763339760000
Mon, Mar 9, 20263479003479000000
Sun, Mar 8, 20263482,9073482,9070000
Sat, Mar 7, 20263047093047090000
Fri, Mar 6, 20262719322719320000
Thu, Mar 5, 202690171901710000
Wed, Mar 4, 202699378993780000
Tue, Mar 3, 202686171861710000
Mon, Mar 2, 20261013011013010000
Sun, Mar 1, 20261042491042490000
Sat, Feb 28, 20261634981634980000
Fri, Feb 27, 20261524861524860000
Thu, Feb 26, 202673255732550000
Wed, Feb 25, 202676267762670000
Tue, Feb 24, 202664215642150000
Mon, Feb 23, 202699549995490000
Sun, Feb 22, 202656126561260000
Sat, Feb 21, 202673234732340000
Fri, Feb 20, 202690273902730000
Thu, Feb 19, 20262059412059410000
Wed, Feb 18, 20262241,4852241,4850000
Tue, Feb 17, 20262246832246830000
Mon, Feb 16, 20261757691757690000
Sun, Feb 15, 202672161721610000
Sat, Feb 14, 202656131561310000
Fri, Feb 13, 20261024201024200000
Thu, Feb 12, 202642111421110000
Wed, Feb 11, 202646250462500000
Tue, Feb 10, 202694464944640000
Mon, Feb 9, 2026245024500000
Sun, Feb 8, 202630111301110000
Sat, Feb 7, 202622122221220000
Fri, Feb 6, 202638339383390000
Thu, Feb 5, 202623144231440000
Wed, Feb 4, 2026236323630000
Tue, Feb 3, 2026188018800000
Mon, Feb 2, 2026176317630000
Sun, Feb 1, 2026143614360000
Sat, Jan 31, 2026102910290000
Fri, Jan 30, 2026152915290000
Thu, Jan 29, 20269839830000
Wed, Jan 28, 2026114611460000
Tue, Jan 27, 2026117611760000
Mon, Jan 26, 2026115611560000
Sun, Jan 25, 2026116911690000
Sat, Jan 24, 20269239230000
Fri, Jan 23, 2026128512850000
Thu, Jan 22, 2026154015400000
Wed, Jan 21, 20269239230000
Tue, Jan 20, 2026159815980000
Mon, Jan 19, 20268418410000
Sun, Jan 18, 2026144814480000
Sat, Jan 17, 2026228622860000
Fri, Jan 16, 2026145814580000
Thu, Jan 15, 2026134813480000
Wed, Jan 14, 202631196311960000
Tue, Jan 13, 202639156391560000
Mon, Jan 12, 2026122812280000
Sun, Jan 11, 202646184461840000
Sat, Jan 10, 2026165816580000
Fri, Jan 9, 202664148641480000
Thu, Jan 8, 2026277827780000
Wed, Jan 7, 202622229222290000
Tue, Jan 6, 2026155115510000
Mon, Jan 5, 2026128212820000
Sun, Jan 4, 202614130141300000
Sat, Jan 3, 20267317310000
Fri, Jan 2, 20267347340000
Thu, Jan 1, 2026107910790000
Wed, Dec 31, 20258238230000
Tue, Dec 30, 20255285280000
Mon, Dec 29, 2025126712670000
Sun, Dec 28, 202518132181320000
Sat, Dec 27, 2025228422840000
Fri, Dec 26, 2025158415840000
Thu, Dec 25, 2025164016400000
Wed, Dec 24, 2025195619560000
Tue, Dec 23, 202534477344770000
Mon, Dec 22, 202545786457860000
Sun, Dec 21, 2025104010400000
Sat, Dec 20, 20256126120000
Fri, Dec 19, 2025163316330000
Thu, Dec 18, 202519238192380101
Wed, Dec 17, 20258178170000
Tue, Dec 16, 20256146140000
Mon, Dec 15, 20255205200000
Sun, Dec 14, 20257227220000
Sat, Dec 13, 20255165160000
Fri, Dec 12, 20256126120000
Thu, Dec 11, 20255125120000
Wed, Dec 10, 20255145140000
Tue, Dec 9, 20255125120000
Mon, Dec 8, 20255135130000
Sun, Dec 7, 20254104100001
Sat, Dec 6, 2025512490013
Fri, Dec 5, 2025411360025
Thu, Dec 4, 2025512250037
Wed, Dec 3, 2025511130048
Tue, Dec 2, 20256160100615
Mon, Dec 1, 20255130000513
Sun, Nov 30, 20256180000618
Sat, Nov 29, 20255120000512
Fri, Nov 28, 20255110000511
Thu, Nov 27, 20257170000717
Wed, Nov 26, 20257150000715
Tue, Nov 25, 20255110000511
Mon, Nov 24, 20258290000829
Sun, Nov 23, 20258170000817
Sat, Nov 22, 20256140000614
Fri, Nov 21, 20257140000714
Thu, Nov 20, 20256150000615
Wed, Nov 19, 20256200000620
Tue, Nov 18, 20255130000513
Mon, Nov 17, 20256130000613
Sun, Nov 16, 2025165000001650
Sat, Nov 15, 2025186600001866
Fri, Nov 14, 2025122700001227
Thu, Nov 13, 2025114400001144
Wed, Nov 12, 2025113200001132
Tue, Nov 11, 20257220000722
Mon, Nov 10, 20255110000511
Sun, Nov 9, 20258240000824
Sat, Nov 8, 20258220000822
Fri, Nov 7, 2025174700001747
Thu, Nov 6, 2025124700001247
Wed, Nov 5, 2025145000001450
Tue, Nov 4, 202517117000017117
Mon, Nov 3, 2025122700001227
Sun, Nov 2, 202528180000028180
Sat, Nov 1, 20259260000926
Fri, Oct 31, 20258230000823
Thu, Oct 30, 20259290000929
Wed, Oct 29, 202517102000017102
Tue, Oct 28, 202524223000024223
Mon, Oct 27, 2025193700001937
Sun, Oct 26, 2025102900001029
Sat, Oct 25, 20257230000723
Fri, Oct 24, 20257140000714
Thu, Oct 23, 20256120000612
Wed, Oct 22, 2025101700001017
Tue, Oct 21, 2025103100001031
Mon, Oct 20, 2025174600001746
Sun, Oct 19, 2025172700001727
Sat, Oct 18, 2025376100003761
Fri, Oct 17, 2025416300004163
Thu, Oct 16, 2025285900002859
Wed, Oct 15, 2025475800004758
Tue, Oct 14, 2025152500001525
Mon, Oct 13, 2025315500003155
Sun, Oct 12, 2025369600003696
Sat, Oct 11, 2025356800003568
Fri, Oct 10, 2025288900002889
Thu, Oct 9, 2025365400003654
Wed, Oct 8, 2025212900002129
Tue, Oct 7, 2025274000002740
Mon, Oct 6, 202575178000075178
Sun, Oct 5, 202579155000079155
Sat, Oct 4, 202590196000090196
Fri, Oct 3, 202565132000065132
Thu, Oct 2, 202575149000075149
Wed, Oct 1, 2025428000004280
Tue, Sep 30, 202551123000051123
Mon, Sep 29, 202555131000055131
Sun, Sep 28, 202571162000071162
Sat, Sep 27, 202566161000066161
Fri, Sep 26, 202558151000058151
Thu, Sep 25, 2025388600003886
Wed, Sep 24, 202551112000051112
Tue, Sep 23, 2025639800006398
Mon, Sep 22, 202560120000060120
Sun, Sep 21, 202553293000053293
Sat, Sep 20, 202564108000064108
Fri, Sep 19, 202578122000078122
Thu, Sep 18, 202556298000056298