Pollen Monitor
Daily pollen insights

Daily pollen overview

Riverside 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

40

Average

55

Peak

Tree

None

0

Average

0

Peak

Grass

None

0

Average

0

Peak

Ragweed

High

40

Average

55

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

Ragweed40

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, 2026Latest405500004055
Mon, Oct 12, 2026466900004669
Sun, Oct 11, 2026599800005998
Sat, Oct 10, 202654108000054108
Fri, Oct 9, 2026659800006598
Thu, Oct 8, 2026619400006194
Wed, Oct 7, 202668105000068105
Tue, Oct 6, 202686122000086122
Mon, Oct 5, 202688126000088126
Sun, Oct 4, 2026629400006294
Sat, Oct 3, 202682126690076117
Fri, Oct 2, 2026661091016005693
Thu, Oct 1, 20267514121400054101
Wed, Sep 30, 2026901493457005592
Tue, Sep 29, 202678202391010039101
Mon, Sep 28, 2026851384269004269
Sun, Sep 27, 2026851204360004360
Sat, Sep 26, 2026721183659003659
Fri, Sep 25, 2026121324611620061162
Thu, Sep 24, 2026781263963003963
Wed, Sep 23, 2026771523876003876
Tue, Sep 22, 202694216471080047108
Mon, Sep 21, 2026102350511750051175
Sun, Sep 20, 2026100350501750050175
Sat, Sep 19, 2026801364068004068
Fri, Sep 18, 2026891944497004497
Thu, Sep 17, 2026111214551070055107
Wed, Sep 16, 2026831464273004273
Tue, Sep 15, 2026861484374004374
Mon, Sep 14, 2026871504475004475
Sun, Sep 13, 2026821384169004169
Sat, Sep 12, 20261001505075005075
Fri, Sep 11, 20261001605080005080
Thu, Sep 10, 20261051465373005373
Wed, Sep 9, 2026881784489004489
Tue, Sep 8, 20261021825191005191
Mon, Sep 7, 2026671043452003452
Sun, Sep 6, 202665863343003343
Sat, Sep 5, 2026721583679003679
Fri, Sep 4, 2026841704285004285
Thu, Sep 3, 2026781523670004282
Wed, Sep 2, 2026591242757003267
Tue, Sep 1, 2026681213156003765
Mon, Aug 31, 2026811203146694465
Sun, Aug 30, 2026861183345694764
Sat, Aug 29, 2026861193346694664
Fri, Aug 28, 202656702227453138
Thu, Aug 27, 202656782230463142
Wed, Aug 26, 202648671926352636
Tue, Aug 25, 202642491619332327
Mon, Aug 24, 202640491619332227
Sun, Aug 23, 202638541521342129
Sat, Aug 22, 202634491319231927
Fri, Aug 21, 202642931636372350
Thu, Aug 20, 202634441317231824
Wed, Aug 19, 20264117716683132296
Tue, Aug 18, 202639801531362143
Mon, Aug 17, 202636441417231924
Sun, Aug 16, 202634441317231924
Sat, Aug 15, 202630341113221719
Fri, Aug 14, 202631351214221719
Thu, Aug 13, 202631351214221719
Wed, Aug 12, 202628361114221520
Tue, Aug 11, 202625311012221417
Mon, Aug 10, 20262227910121215
Sun, Aug 9, 202625351014121419
Sat, Aug 8, 20262227910121215
Fri, Aug 7, 20262228911121215
Thu, Aug 6, 20262127810121215
Wed, Aug 5, 20262027810121115
Tue, Aug 4, 20261927810121115
Mon, Aug 3, 202619266846912
Sun, Aug 2, 202619264668912
Sat, Aug 1, 2026212533911911
Fri, Jul 31, 20262128121115811
Thu, Jul 30, 20262131001420711
Wed, Jul 29, 20262029001319710
Tue, Jul 28, 20262129001419710
Mon, Jul 27, 20262242001427815
Sun, Jul 26, 20262129001319710
Sat, Jul 25, 20262131001420811
Fri, Jul 24, 20262544001628916
Thu, Jul 23, 2026222600141789
Wed, Jul 22, 20262329001519810
Tue, Jul 21, 20262429001619910
Mon, Jul 20, 20262229001419810
Sun, Jul 19, 20262229001419810
Sat, Jul 18, 20262329001519810
Fri, Jul 17, 20262329001519810
Thu, Jul 16, 20262228001418810
Wed, Jul 15, 20262531001620911
Tue, Jul 14, 20262229001419810
Mon, Jul 13, 20262534001622912
Sun, Jul 12, 202636440023281316
Sat, Jul 11, 20262634001722912
Fri, Jul 10, 20262635001723912
Thu, Jul 9, 202629340019221012
Wed, Jul 8, 20262635001723913
Tue, Jul 7, 20262042016141327
Mon, Jul 6, 2026172812691117
Sun, Jul 5, 20262912531011481567
Sat, Jul 4, 2026267541110291135
Fri, Jul 3, 2026318561714371231
Thu, Jul 2, 202623485111122715
Wed, Jul 1, 2026223169111558
Tue, Jun 30, 202629528161424712
Mon, Jun 29, 202626537151227612
Sun, Jun 28, 202631629161530716
Sat, Jun 27, 2026331179331660824
Fri, Jun 26, 202625467141221611
Thu, Jun 25, 202623487151122512
Wed, Jun 24, 202626408111320610
Tue, Jun 23, 202627448131323610
Mon, Jun 22, 202631569171526714
Sun, Jun 21, 202633519141627711
Sat, Jun 20, 202629528161424712
Fri, Jun 19, 202626457141321611
Thu, Jun 18, 202627788241336618
Wed, Jun 17, 202630559171527713
Tue, Jun 16, 202630539161527712
Mon, Jun 15, 202629548141426714
Sun, Jun 14, 202625557171225613
Sat, Jun 13, 202630609171531714
Fri, Jun 12, 20263710110281852821
Thu, Jun 11, 202642146124520671034
Wed, Jun 10, 20263811011281854928
Tue, Jun 9, 20264885142623391120
Mon, Jun 8, 20265092142824431121
Sun, Jun 7, 202672135254832581529
Sat, Jun 6, 202616335370163641362954
Fri, Jun 5, 202671103355325371116
Thu, Jun 4, 202678126456723391020
Wed, Jun 3, 20266412442791632613
Tue, Jun 2, 20267513255951430611
Mon, Jun 1, 202696161751231528613
Sun, May 31, 202689217701821432516
Sat, May 30, 202689137701041422511
Fri, May 29, 2026118186931461934713
Thu, May 28, 2026117245921961832717
Wed, May 27, 2026122274962221934718
Tue, May 26, 2026100144781141626612
Mon, May 25, 2026103352822921639621
Sun, May 24, 2026123267972261930712
Sat, May 23, 2026118216931781833615
Fri, May 22, 2026106208841641738614
Thu, May 21, 202688144691141426510
Wed, May 20, 2026111286882231852622
Tue, May 19, 202686176671391432513
Mon, May 18, 202699304792561541519
Sun, May 17, 202618627914721929511122
Sat, May 16, 202619883316174927721018
Fri, May 15, 20261362741092332039716
Thu, May 14, 2026124272972181938716
Wed, May 13, 20261622731282282547918
Tue, May 12, 202620354916447029791027
Mon, May 11, 202616229412822725511022
Sun, May 10, 202616640513233924431023
Sat, May 9, 202627558122551237771436
Fri, May 8, 202619462215655128611025
Thu, May 7, 202626485222476028601232
Wed, May 6, 20262175451925162035514
Tue, May 5, 20262766372536031833617
Mon, May 4, 202629986828885082029
Sun, May 3, 202627885127283351829
Sat, May 2, 20263292,2083282,2080202
Fri, May 1, 20262799232799230000
Thu, Apr 30, 20262076022076020000
Wed, Apr 29, 20261836491836490000
Tue, Apr 28, 20262174112174110000
Mon, Apr 27, 20262841,1192841,1190000
Sun, Apr 26, 20263911,4163911,4160000
Sat, Apr 25, 20264501,2694501,2690000
Fri, Apr 24, 20265203,4455203,4450000
Thu, Apr 23, 20264031,0144031,0140000
Wed, Apr 22, 20265982,2235982,2230000
Tue, Apr 21, 20266152,4646152,4640000
Mon, Apr 20, 20266673,0306673,0300000
Sun, Apr 19, 20264071,6484071,6480000
Sat, Apr 18, 20262561,1222561,1220000
Fri, Apr 17, 20262596702596700000
Thu, Apr 16, 20264021,7544021,7540000
Wed, Apr 15, 20266452,2086452,2080000
Tue, Apr 14, 20267273,5197273,5190000
Mon, Apr 13, 20267384,7057384,7050000
Sun, Apr 12, 20267513,4337513,4330000
Sat, Apr 11, 20266842,7756842,7750000
Fri, Apr 10, 20266812,3916812,3910000
Thu, Apr 9, 20261,0356,5431,0356,5430000
Wed, Apr 8, 20268803,4098803,4090000
Tue, Apr 7, 20268683,5538683,5530000
Mon, Apr 6, 20268253,4228253,4220000
Sun, Apr 5, 20265482,5465482,5460000
Sat, Apr 4, 20267802,2337802,2330000
Fri, Apr 3, 20265792,1095792,1090000
Thu, Apr 2, 20267842,1547842,1540000
Wed, Apr 1, 20262,2066,7012,2066,7010000
Tue, Mar 31, 20261,6314,7471,6314,7470000
Mon, Mar 30, 20261,1136,8501,1136,8500000
Sun, Mar 29, 20268723,3298723,3290000
Sat, Mar 28, 20269183,0429183,0420000
Fri, Mar 27, 20269503,2089503,2080000
Thu, Mar 26, 20268994,1378994,1370000
Wed, Mar 25, 20268583,6768583,6760000
Tue, Mar 24, 20263341,3483341,3480000
Mon, Mar 23, 20266061,8046061,8040000
Sun, Mar 22, 20267222,3227222,3220000
Sat, Mar 21, 20266651,9356651,9350000
Fri, Mar 20, 20267242,1737242,1730000
Thu, Mar 19, 20263081,0103081,0100000
Wed, Mar 18, 20261879521879520000
Tue, Mar 17, 20262709982709980000
Mon, Mar 16, 20264191,6824191,6820000
Sun, Mar 15, 20261985601985600000
Sat, Mar 14, 20261801,1961801,1960000
Fri, Mar 13, 20261332751332750000
Thu, Mar 12, 20262434852434850000
Wed, Mar 11, 20261794401794400000
Tue, Mar 10, 20262791,0722791,0720000
Mon, Mar 9, 20262235502235500000
Sun, Mar 8, 20262321,2942321,2940000
Sat, Mar 7, 20262348242348240000
Fri, Mar 6, 20261604021604020000
Thu, Mar 5, 20261884211884210000
Wed, Mar 4, 20262115202115200000
Tue, Mar 3, 20262951,3982951,3980000
Mon, Mar 2, 20262665792665790000
Sun, Mar 1, 20261743561743560000
Sat, Feb 28, 20261507281507280000
Fri, Feb 27, 20261711,0361711,0360000
Thu, Feb 26, 20262418082418080000
Wed, Feb 25, 20262126172126170000
Tue, Feb 24, 20261713821713820000
Mon, Feb 23, 20261523241523240000
Sun, Feb 22, 20262376902376900000
Sat, Feb 21, 20262261,1172261,1170000
Fri, Feb 20, 20261664811664810000
Thu, Feb 19, 20262178422178420000
Wed, Feb 18, 20262126832126830000
Tue, Feb 17, 20261533451533450000
Mon, Feb 16, 20261783571783570000
Sun, Feb 15, 20261011821011820000
Sat, Feb 14, 202695209952090000
Fri, Feb 13, 20264221,3254221,3250000
Thu, Feb 12, 20261032591032590000
Wed, Feb 11, 20261716671716670000
Tue, Feb 10, 202689306893060000
Mon, Feb 9, 2026427542750000
Sun, Feb 8, 202676153761530000
Sat, Feb 7, 202671122711220000
Fri, Feb 6, 202664120641200000
Thu, Feb 5, 202676152761520000
Wed, Feb 4, 202648102481020000
Tue, Feb 3, 202683173831730000
Mon, Feb 2, 20261012301012300000
Sun, Feb 1, 202653111531110000
Sat, Jan 31, 202641108411080000
Fri, Jan 30, 202643110431100000
Thu, Jan 29, 202650122501220000
Wed, Jan 28, 2026429742970000
Tue, Jan 27, 20261291,7931291,7930000
Mon, Jan 26, 2026325732570000
Sun, Jan 25, 202685285852850000
Sat, Jan 24, 202697163971630000
Fri, Jan 23, 202699798997980000
Thu, Jan 22, 202676215762150000
Wed, Jan 21, 202677240772400000
Tue, Jan 20, 202686174861740000
Mon, Jan 19, 202653156531560000
Sun, Jan 18, 202649118491180000
Sat, Jan 17, 2026508950890000
Fri, Jan 16, 202662300623000000
Thu, Jan 15, 2026365336530000
Wed, Jan 14, 202663104631040000
Tue, Jan 13, 202651141511410000
Mon, Jan 12, 20261266071266070000
Sun, Jan 11, 20262521,0562521,0560000
Sat, Jan 10, 202664219642190000
Fri, Jan 9, 20261667481667480000
Thu, Jan 8, 202665144651440000
Wed, Jan 7, 202676153761530000
Tue, Jan 6, 202657141571410000
Mon, Jan 5, 202665198651980000
Sun, Jan 4, 2026203820380000
Sat, Jan 3, 202638104381040000
Fri, Jan 2, 2026183118310000
Thu, Jan 1, 202640240402400000
Wed, Dec 31, 20251041741041740000
Tue, Dec 30, 202575287752870000
Mon, Dec 29, 20252351,1022351,1020000
Sun, Dec 28, 202548156481560000
Sat, Dec 27, 2025247924790000
Fri, Dec 26, 2025377037700000
Thu, Dec 25, 202542132421320000
Wed, Dec 24, 202551234512340000
Tue, Dec 23, 202534127341270000
Mon, Dec 22, 2025254625460000
Sun, Dec 21, 2025379737970000
Sat, Dec 20, 202555219552190000
Fri, Dec 19, 2025348434840000
Thu, Dec 18, 2025266826680000
Wed, Dec 17, 202536125361250000
Tue, Dec 16, 20252491,4892491,4890000
Mon, Dec 15, 2025154715470000
Sun, Dec 14, 2025378937890000
Sat, Dec 13, 2025143114310000
Fri, Dec 12, 2025123112310000
Thu, Dec 11, 2025183318330000
Wed, Dec 10, 2025203620360000
Tue, Dec 9, 2025224122410000
Mon, Dec 8, 2025266526650000
Sun, Dec 7, 2025123411310014
Sat, Dec 6, 20251660124300417
Fri, Dec 5, 20251853103000823
Thu, Dec 4, 20251837816001021
Wed, Dec 3, 2025123731000927
Tue, Dec 2, 2025165215001447
Mon, Dec 1, 2025165400001654
Sun, Nov 30, 2025104300001043
Sat, Nov 29, 2025165500001655
Fri, Nov 28, 2025133100001331
Thu, Nov 27, 2025235600002356
Wed, Nov 26, 2025264200002642
Tue, Nov 25, 2025186600001866
Mon, Nov 24, 20259260000926
Sun, Nov 23, 2025133400001334
Sat, Nov 22, 2025132400001324
Fri, Nov 21, 202512109000012109
Thu, Nov 20, 2025102900001029
Wed, Nov 19, 2025103700001037
Tue, Nov 18, 20258300000830
Mon, Nov 17, 20257200000720
Sun, Nov 16, 20256180000618
Sat, Nov 15, 2025103000001030
Fri, Nov 14, 2025183300001833
Thu, Nov 13, 2025153500001535
Wed, Nov 12, 2025163100001631
Tue, Nov 11, 2025173500001735
Mon, Nov 10, 2025164200001642
Sun, Nov 9, 2025133200001332
Sat, Nov 8, 2025224900002249
Fri, Nov 7, 2025173200001732
Thu, Nov 6, 2025132900001329
Wed, Nov 5, 2025143200001432
Tue, Nov 4, 2025153500001535
Mon, Nov 3, 2025257900002579
Sun, Nov 2, 2025196300001963
Sat, Nov 1, 202535126000035126
Fri, Oct 31, 2025478400004784
Thu, Oct 30, 2025194300001943
Wed, Oct 29, 2025416600004166
Tue, Oct 28, 202539218000039218
Mon, Oct 27, 2025204600002046
Sun, Oct 26, 2025204600002046
Sat, Oct 25, 2025214500002145
Fri, Oct 24, 2025296800002968
Thu, Oct 23, 2025277500002775
Wed, Oct 22, 2025398400003984
Tue, Oct 21, 2025296500002965
Mon, Oct 20, 2025296400002964
Sun, Oct 19, 202527112000027112
Sat, Oct 18, 2025378800003788
Fri, Oct 17, 202551147000051147
Thu, Oct 16, 2025367200003672
Wed, Oct 15, 202542127000042127
Tue, Oct 14, 202549188000049188
Mon, Oct 13, 202558164000058164
Sun, Oct 12, 202550194000050194
Sat, Oct 11, 20251102990000110299
Fri, Oct 10, 2025276700002767
Thu, Oct 9, 202554201000054201
Wed, Oct 8, 202561295000061295
Tue, Oct 7, 202565309000065309
Mon, Oct 6, 202565234000065234
Sun, Oct 5, 202565210000065210
Sat, Oct 4, 202552174000052174
Fri, Oct 3, 202583337000083337
Thu, Oct 2, 202573172000073172
Wed, Oct 1, 202557152000057152
Tue, Sep 30, 202570264000070264
Mon, Sep 29, 202582284000082284
Sun, Sep 28, 202571324000071324
Sat, Sep 27, 202568209000068209
Fri, Sep 26, 202570250000070250
Thu, Sep 25, 20251002430000100243
Wed, Sep 24, 202599170000099170
Tue, Sep 23, 202591257000091257
Mon, Sep 22, 202560138000060138
Sun, Sep 21, 202578217000078217
Sat, Sep 20, 202588322000088322
Fri, Sep 19, 20251022170000102217