High Sierra Topix

Lake Sabrina -> Blue Lake: 1 (0 below roughly 9700 ft. both days)
Blue Lake -> Midnight Lake: 3

Basically what Granite4brains said a couple weeks ago.

Emigrant 7/2-7/6
Varied between a 2 and 3 most places from Crabtree to Louse Canyon. Maybe a little worse near water. Only a 2 around the main fork of Cherry Creek and nearby lakes.

Little Lakes Valley 7/5-7/6

3/4 - Was fine during the middle of day when not too close to the water. But in the evening and early morning we got swarmed whenever we were near any water, which was most of the trail.

This report covers Kearsarge Pass to JMT to Bubbs Creek to East Lake trails.

East Lake - 3 (not swarming, but relentless especially in late afternoon to early evening)
Vidette Meadow - 3 (relentless during any stops longer than 2 minutes)
Kearsarge Basin (near Bullfrog Lake) - 2-3
Onion Valley and above: 0-1 depending on time of the day, most attacks near Gilbert and Matlock lakes

Midnight, Blue, Hungry Packer and Moonlight lakes 2 - 3
Echo Lake 1

Chain Lakes

Dusk/Dawn: 3-4 it was pretty bad, ended up with at least 20-30 bites (didnt use deet, just lemon eucalyptus repel)
During the day there was a nice breeze and all the mosquitoes were gone.
Headnets are a great idea out there.

Almost no mosquitoes at all with one exception
Tyndall Creek none
Wright Creek none
Wallace Creek and Lake....TERRIBLE (4)
Hitchcock Lakes and Arctic Lake none

No logical reason why mosquitoes so much worse on Wallace Creek and Lake while creeks and lakes of similar elevations have none.

6/26-6/30 Agnew meadows-Thousand island Lake-Garnet Lake-Shadow Lake area.

6/26 Agnew Meadows - 0. It was raining when we left so no mosquitoes.
6/26 Stayed the night at Thousand Island Lake. - 1. Not many at all but it was still breezy after the storm they had the night before. Spoke to a guy who stayed the previous night and he said that it was so windy his tent almost blew away and had hail/snow. Talked to a few kids who said several of the tents in their group got flooded so I blame the storm for keeping them away.
6/27-6/28 Garnet Lake- solid 3-4. Stayed 2 nights at Garnet Lake and they were the worse there on the whole trip. Solid from sun up to sun down except when we got a welcome breeze.
6/29 - 1. Stayed the night around the JMT/Ediza Lake intersection. Not bad at all. Didn't need a head net.
6/30. 2-3 when hiking back thru Agnew meadows.

I wore RailRiders eco-mesh pants with their Madison river shirt which both have their insect repellent in the fabric coupled with a head net and I only had 4 bites that weren't on my hands. My hiking partner who did not have a head net nor did he use insect repellent counted 113 bites when he got home.

7/4 Devil’s Postpile to Minaret Lake: 4 at the stretch past Johnston Meadow and along one other marshy stretch on the trail-- otherwise 1. At Minaret Lake: 2, but very bearable when the breeze picked up.
7/5 Above Minaret through Cecile Lake and Iceberg Lake: 0. Trail into Ediza Lake: 1 with a breeze during the day. We camped above Ediza Lake (not on the meadow) and would say 1 for the night.
7/6 Hiking down into and all along Shadow Lake: 3. 1 for the rest of the trail through Agnew Meadows.
We wore pants and long sleeves and kept moving along the trail. No repellent. It was an unbelievably mosquito free trip. I was extremely surprised.

7/3 - Mono Village to Peeler Lake: Breezy, 0 to 1 - no head net. Camped up in breezy area off of the lake.
7/4 - Peeler Lake through Kerrick meadow to Benson Lake: 0 to 2 with more activity climbing Seavey Pass. Broke out the head net for peace of mind. Great breeze at Benson in the evening to keep them at a minimum.
7/5 - Benson Lake, Smedberg to PCT Junction at Matterhorn Canyon: 2 - 3 plus. Morning at Benson and hike out 3+, Smeadberg was clear and beautiful. Approach to PCT Junction was 2 -3. Campsite above Matterhorn Canyon Creek - slight breeze 2 - 3.
7/6 - Matterhorn Canyon over Burro Pass: 3 - head nets used with long pants & long sleeves, some repellent. Camped in rock slab area along Piute Cr. nice breeze, 1.
7/7 - Mule Pass, Crown Lake, Barney to exit: Mule Pass area 2, Crown Lake area 4, exit out 1.